Liabilities / Assets
75th percentile
Higher debt load relative to assets than 75% of similar nonprofits.
EIN 84-0754945 • 501(c)3 • Denver, CO
Profile
The mission of four mile historic park is to educate, preserve, and interpret the western rural heritage of colorado to a diverse public.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
75th percentile
Higher debt load relative to assets than 75% of similar nonprofits.
Liabilities / Revenue
65th percentile
Higher debt load relative to revenue than 65% of similar nonprofits.
Net Margin
43rd percentile
Higher net margin than 43% of similar nonprofits.
Top Officer Pay
66th percentile
Higher top officer pay than 66% of similar nonprofits.
Top officer pay equals 6.9% of source-year revenue.
Asset Growth
51st percentile
Faster asset growth than 51% of similar nonprofits.
Revenue Growth
77th percentile
Faster revenue growth than 77% of similar nonprofits.
Assets
Up$850,769
Up $31,485 (+3.8%) from 2024
Liabilities
Down$263,709
Down $21,303 (-7.5%) from 2024
Net Assets
Up$587,060
Up $52,788 (+9.9%) from 2024
Revenue
Up$1,447,218
Up $369,878 (+34%) from 2024
Expenses
Up$1,428,839
Up $196,974 (+16%) from 2024
Net Income
Up$18,379
Up $172,904 (+112%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
The mission of the four mile historic park is to educate a diverse community through experiences which promote preservation, interpretation and enjoyment of denver's western heritage.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $580,222 | $603,283 | ▲ $23,061 |
| Land, Buildings, and Equipment, Net | $159,305 | $126,663 | ▼ $32,642 |
| Cash and Non-Interest-Bearing Accounts | $39,821 | $38,475 | ▼ $1,346 |
| Prepaid Expenses and Deferred Charges | $19,866 | $29,519 | ▲ $9,653 |
| Savings and Temporary Cash Investments | $1,982 | $24,735 | ▲ $22,753 |
| Accounts Receivable | $475 | $14,611 | ▲ $14,136 |
| Inventories for Sale or Use | $17,613 | $13,483 | ▼ $4,130 |
| Total Assets | $819,284 | $850,769 | ▲ $31,485 |
| Liabilities | |||
| Other Liabilities | $169,234 | $141,897 | ▼ $27,337 |
| Accounts Payable and Accrued Expenses | $65,638 | $69,157 | ▲ $3,519 |
| Unsecured Notes Loans Payable | $45,000 | $35,000 | ▼ $10,000 |
| Deferred Revenue | $5,140 | $17,655 | ▲ $12,515 |
| Total Liabilities | $285,012 | $263,709 | ▼ $21,303 |
| Net Assets / Fund Balance | |||
| Net Assets With Donor Restrictions | $348,406 | $348,406 | → $0 |
| Net Assets Without Donor Restrictions | $185,866 | $238,654 | ▲ $52,788 |
| Total Net Assets Fund Balance | $534,272 | $587,060 | ▲ $52,788 |
| Total Liabilities and Net Assets / Fund Balance | $819,284 | $850,769 | ▲ $31,485 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $126,663 | $169,938 | $296,601 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $580,222 | - | ▲ $54,411 | $-27,154 | $603,283 |
| 2023 | $553,886 | - | ▲ $59,773 | $-29,479 | $580,222 |
| 2022 | $541,094 | - | ▲ $46,084 | $-29,540 | $553,886 |
| 2021 | $673,757 | - | ▼ $78,279 | $-50,000 | $541,094 |
| 2020 | $557,590 | - | ▲ $150,240 | $-29,721 | $673,757 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Jennifer Lagraff | CEO | FT | $96,648 | $2,982 | $99,630 |
| Name | Title |
|---|---|
| Dustin Richardson | Chair |
| Elsa Woolley Harberg | Chair |
| Brett Tucker | Vice Chair |
| Chuck Line | Board Member |
| Dan Williams | Board Member |
| Daniel Oxendeine | Board Member |
| Katherine Duncan | Board Member |
| Melanie Golden | Board Member |
| Patriciatrujillo | Board Member |
| Val Johnson | Board Member |
| James Wilkins | Member Emeri |
| Andrea Stanton | Secretary |
| H Christine Richards | Treasurer El |
| Line Item | Amount |
|---|---|
| Other Expenses | $888,451 |
| Salaries, Compensation, and Employee Benefits | $540,388 |
| Total Fundraising Expense | $124,484 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $285,007 | $18,265 | $42,652 | $345,924 |
| Advertising | $247,957 | $7,013 | $6,415 | $261,385 |
| Current Officers, Directors, Trustees, and Key Employees | $82,596 | $6,734 | $12,280 | $101,610 |
| Office Expenses | $24,559 | $64,462 | $1,100 | $90,121 |
| Fees for Services Other | $12,650 | $3,076 | $37,775 | $53,501 |
| Occupancy | $49,794 | $1,934 | $95 | $51,823 |
| Payroll Taxes | $20,371 | $23,687 | $1,924 | $45,982 |
| Depreciation Depletion | - | $44,092 | - | $44,092 |
| All Other Expenses | $35,427 | $4,866 | $1,465 | $41,758 |
| Other Expenses | $32,024 | $2,699 | $6,958 | $41,681 |
| Other Employee Benefits | $17,085 | $19,791 | $1,537 | $38,413 |
| Information Technology | $14,491 | $4,695 | $9,364 | $28,550 |
| Fees for Services Accounting | - | $26,795 | - | $26,795 |
| Interest | - | $10,961 | - | $10,961 |
| Pension Plan Contributions | $3,763 | $4,358 | $338 | $8,459 |
| Insurance | $161 | $6,260 | - | $6,421 |
| Conferences and Meetings | $2,606 | $288 | - | $2,894 |
| Travel | $2,674 | $93 | $16 | $2,783 |
| Total Functional Expenses | $1,054,176 | $250,179 | $124,484 | $1,428,839 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $1,486,430 |
| Expenses per Audited Statements | $1,428,839 |
| Total Expenses per Form 990 | $1,428,839 |
| Expenses Not Reported on Form 990 | $57,591 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $84,035 |
| Fundraising Direct Expenses | $35,681 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Rendezvous Gala | $84,035 | $84,035 | $35,681 | $48,354 |
| Total Events | $84,035 | $84,035 | $35,681 | $48,354 |
| Interested Party | Relationship | Description | Shared Revenue | Amount |
|---|---|---|---|---|
| Daniel Selph | Ed Family Membe | Event Management | No | $39,900 |
| Dustin Richardson | Board Member | Accounting Services | No | $16,750 |
| Brett Tucker | Board Member | Catering Services | No | $4,550 |
| Liability | Amount |
|---|---|
| Leased Equipment Obligation | $91,897 |
| Rental Deposits | $50,000 |
“Form 990 is reviewed by management and hired accounting personnel.”
“ANNUAL REVIEW”
“Annual review of the industry using annual survey of comparable salaries in like institutions in the same geographic area (mainly using the colorado non profit association survey report.”
“Annual review of the industry using annual survey of comparable salaries in like institutions in the same geographic area (mainly using the colorado non profit association survey report.”
“AVAILABLE UPON REQUEST.”
“The organization established three endowment funds in march, 2008. The endowments are comprised of the following three funds: general endowment (unrestricted) under the terms of the organization's investment policy, the principal of this fund will be kept intact and may be accessed only for special needs of the park by a majority vote of the board. Designated endowment (permanently restricted) the principal of this fund will be kept intact, and earnings may be spent for purposes designated by donors. Designated fund (temporarily restricted) the principal and earnings of this fund shall be spent for purposes restricted by donors. Gifts made to this fund, including realized capital gains and earnings, will be used as determined by the board, subject only to restriction by the donors. This fund currently has no assets.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 65638 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 69157 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 475 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 14611 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | THE MISSION OF THE FOUR MILE HISTORIC PARK IS TO EDUCATE A DIVERSE COMMUNITY THROUGH EXPERIENCES WHICH PROMOTE PRESERVATION, INTERPRETATION AND ENJOYMENT OF DENVER'S WESTERN HERITAGE. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 6415 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 7013 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 247957 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 261385 |
| IRS990/AllOtherContributionsAmt | 0 | 653422 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 1465 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 4866 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 35427 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 41758 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | THE COMPANY |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 3033991859 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 715 SOUTH FOREST ST |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | DENVER |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CO |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 80246 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | true |
| IRS990/BusinessRlnWithOrgMemInd | 0 | true |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 39821 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 38475 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | true |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 12280 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 6734 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 82596 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 101610 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 288 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 2606 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 2894 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CostOfGoodsSoldAmt | 0 | 27787 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 856077 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 16094 |
| IRS990/CYOtherExpensesAmt | 0 | 888451 |
| IRS990/CYOtherRevenueAmt | 0 | 131575 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 443472 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 18379 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 540388 |
| IRS990/CYTotalExpensesAmt | 0 | 1428839 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 124484 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1447218 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 5140 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 17655 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 44092 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 44092 |
| IRS990/Desc | 0 | THE PARK IS A HUB OF CULTURAL AND OUTDOOR EXPLORATION, OFFERING A DIVERSE ARRAY OF EDUCATIONAL PROGRAMS CENTERED AROUND COLORADO HISTORY. GUIDED TOURS OF THE ICONIC FOUR MILE HOUSE, FIELD TRIPS, AND OUTREACH PROGRAMS PROVIDE AN IMMERSIVE JOURNEY INTO THE PAST, ALLOWING VISITORS TO CONNECT WITH THE HERITAGE THAT HAS SHAPED DENVER. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 348406 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 348406 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 16 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 588392 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 26795 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 26795 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 37775 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 3076 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 12650 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 53501 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 2982 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | JENNIFER LAGRAFF |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | ELSA WOOLLEY HARBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DUSTIN RICHARDSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | BRETT TUCKER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | ANDREA STANTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | CHUCK LINE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | DAN WILLIAMS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | JAMES WILKINS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | PATRICIATRUJILLO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | VAL JOHNSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | H CHRISTINE RICHARDS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | MELANIE GOLDEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | DANIEL OXENDEINE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | KATHERINE DUNCAN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 96648 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CEO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | MEMBER EMERI |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TREASURER EL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | BOARD MEMBER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/Form990TFiledInd | 0 | true |
| IRS990/FormationYr | 0 | 1978 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 35681 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 84035 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GovernmentGrantsAmt | 0 | 191969 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 1510686 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 41011 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 9364 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 4695 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 14491 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 28550 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6260 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 161 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 6421 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 10961 |
| IRS990/InterestGrp/TotalAmt | 0 | 10961 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 17613 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 13483 |
| IRS990/InvestmentExpenseAmt | 0 | -4196 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 16094 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 16094 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 580222 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 603283 |
| IRS990/IRPDocumentCnt | 0 | 46 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 169938 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 159305 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 126663 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 296601 |
| IRS990/LegalDomicileStateCd | 0 | CO |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembershipDuesAmt | 0 | 10686 |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | THE MISSION OF THE FOUR MILE HISTORIC PARK IS TO EDUCATE A DIVERSE COMMUNITY THROUGH EXPERIENCES WHICH PROMOTE PRESERVATION, INTERPRETATION AND ENJOYMENT OF DENVER'S WESTERN HERITAGE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 534272 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 587060 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 48354 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 48354 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 13224 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 13224 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 2712 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 38605 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 185866 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 238654 |
| IRS990/NoncashContributionsAmt | 0 | 16354 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 95 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 1934 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 49794 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 51823 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 1100 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 64462 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 24559 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 90121 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 1537 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 19791 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 17085 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 38413 |
| IRS990/OtherExpensesGrp/Desc | 0 | EVENT STAFFING |
| IRS990/OtherExpensesGrp/Desc | 1 | COST OF GOODS SOLD |
| IRS990/OtherExpensesGrp/Desc | 2 | PERFORMANCES AND ARTISTS |
| IRS990/OtherExpensesGrp/Desc | 3 | EQUIPMENT |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 75 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 1990 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 500 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 3 | 6958 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 110 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 2699 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 98940 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 75057 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 49014 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 32024 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 99015 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 77157 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 49514 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 41681 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 169234 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 141897 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | PROCESSING FEES RECOUPED |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 69997 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 69997 |
| IRS990/OtherRevenueTotalAmt | 0 | 69997 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 42652 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 18265 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 285007 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 345924 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 1924 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 23687 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 20371 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 45982 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 338 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 4358 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 3763 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 8459 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 19866 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 29519 |
| IRS990/PrincipalOfficerNm | 0 | ELSA WOOLLEY HARBERG |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 713110 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 532000 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | PROGRAM INCOME |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | LIQUOR SALES |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | EVENTS AND ADMISSIONS |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 208730 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 90448 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 208730 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 144294 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 90448 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 144294 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | FOUR MILE HISTORIC PARK IS A GATEWAY TO DENVER'S WESTERN HERITAGE, OFFERING A VIBRANT 12-ACRE OASIS WITH A WORKING FARM AND DENVER'S OLDEST STANDING STRUCTURE, THE FOUR MILE HOUSE MUSEUM. THE MUSEUM HOUSES AN EXTENSIVE COLLECTION OF MID TO LATE 1800S WESTERN ARTIFACTS, SERVING EDUCATIONAL, HISTORICAL, CURATORIAL, AND RESEARCH PURPOSES. PROUDLY ACTING AS A CUSTODIAN OF CULTURAL TREASURES, THE MUSEUM EVOLVES WITH CONTEMPORARY APPROACHES TO ARTIFACT INTERACTION, ASPIRING TO BE AN IMMERSIVE CULTURAL ATTRACTION THAT GOES BEYOND TRADITIONAL MUSEUM SETTINGS. VISITORS ACTIVELY PARTICIPATE IN A DYNAMIC EXPERIENCE THAT BRINGS HISTORY TO LIFE. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 465784 |
| IRS990/ProgSrvcAccomActy2Grp/RevenueAmt | 0 | 443472 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 457161 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 14101 |
| IRS990/PYOtherExpensesAmt | 0 | 724577 |
| IRS990/PYOtherRevenueAmt | 0 | 204157 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 401921 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -154525 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 507288 |
| IRS990/PYTotalExpensesAmt | 0 | 1231865 |
| IRS990/PYTotalRevenueAmt | 0 | 1077340 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 18379 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 1982 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 24735 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | OTHER INCOME 0 SPECIAL EVENTS NET 0 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | PART II, LINE 10 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 856077 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 457161 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 369809 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 357618 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 299623 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 2340288 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 16094 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 72968 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 105393 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 107199 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 24143 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 325797 |
| IRS990ScheduleA/GrossReceiptsRltdActivitiesAmt | 0 | 1594769 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.87690 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.82960 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 2340288 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 856077 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 457161 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 369809 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 357618 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 299623 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 2340288 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 2668797 |
| IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/CurrentTaxYearAmt | 0 | 2712 |
| IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/TotalAmt | 0 | 2712 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
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