Liabilities / Assets
33rd percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 52-1558576 • 501(c)3 • Sharpsburg, MD
Profile
The mission of the save historic antietam foundation is the preservation and protection of historic sites within the antietam valley that are related to the battle of antietam, the maryland campaign, or other civil war activity in the region.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
33rd percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
34th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
92nd percentile
Higher net margin than 92% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
66th percentile
Faster asset growth than 66% of similar nonprofits.
Revenue Growth
26th percentile
Faster revenue growth than 26% of similar nonprofits.
Assets
Up$667,058
Up $66,107 (+11%) from 2023
Liabilities
Flat$0
Flat from 2023
Net Assets
Up$667,058
Up $66,107 (+11%) from 2023
Revenue
Down$93,007
Down $8,142 (-8.0%) from 2023
Expenses
Up$38,584
Up $4,375 (+13%) from 2023
Net Income
Down$54,423
Down $12,517 (-19%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
The mission of the save historic antietam foundation is the preservation and protection of historic sites within the antietam valley that are related to the battle of antietam, the maryland campaign, or other civil war activity in the region.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $276,177 | $328,093 | ▲ $51,916 |
| Land, Buildings, and Equipment, Net | $291,675 | $291,675 | → $0 |
| Cash and Non-Interest-Bearing Accounts | $30,219 | $47,290 | ▲ $17,071 |
| Inventories for Sale or Use | $2,880 | - | - |
| Total Assets | $600,951 | $667,058 | ▲ $66,107 |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $600,951 | $657,058 | ▲ $56,107 |
| Net Assets With Donor Restrictions | - | $10,000 | - |
| Total Net Assets Fund Balance | $600,951 | $667,058 | ▲ $66,107 |
| Total Liabilities and Net Assets / Fund Balance | $600,951 | $667,058 | ▲ $66,107 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $291,675 | - | - |
| Name | Title |
|---|---|
| Thomas Clemens | President |
| Dennis Frye | Vice President |
| David Langbart | Trustee |
| Gordon Dammann | Trustee |
| Harry Smeltzer | Trustee |
| Henry Stiles | Trustee |
| John Schildt | Trustee |
| Katherine Sheppard | Trustee |
| Kevin Pawlak | Trustee |
| Mary Abroe | Trustee |
| Rogers M Fred | Trustee |
| Sharon Murray | Trustee |
| Jim Broomall | Trustee - Ended December 31 2024 |
| John Banks | Trustee - Ended December 31 2024 |
| Paula Reed | Secretary |
| William Maharay | Treasurer |
| Line Item | Amount |
|---|---|
| Other Expenses | $32,984 |
| Grants and Similar Amounts Paid | $5,600 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Expenses | $15,000 | - | - | $15,000 |
| Grants to Domestic Orgs | $5,600 | - | - | $5,600 |
| Fees for Service Investment Mgmnt Fees | - | $4,807 | - | $4,807 |
| Occupancy | $1,851 | - | - | $1,851 |
| Advertising | $1,096 | - | - | $1,096 |
| Information Technology | $686 | - | - | $686 |
| Insurance | $255 | - | - | $255 |
| Office Expenses | $154 | - | - | $154 |
| Fees for Services Other | $100 | - | - | $100 |
| Total Functional Expenses | $33,777 | $4,807 | $0 | $38,584 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| American Battlefield Trust | Washington, DC | 501c3 | Battlefield Preservation | $5,000 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Save historic antietam foundation, inc. Does not have any committees.”
“The executive committee, which consists of five individuals, reviews the form 990 prior to filing.”
“Copies of the governing documents are made available to the public upon written request.”
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/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | THE MISSION OF THE SAVE HISTORIC ANTIETAM FOUNDATION IS THE PRESERVATION AND PROTECTION OF HISTORIC SITES WITHIN THE ANTIETAM VALLEY THAT ARE RELATED TO THE BATTLE OF ANTIETAM, THE MARYLAND CAMPAIGN, OR OTHER CIVIL WAR ACTIVITY IN THE REGION. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 1096 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 1096 |
| IRS990/AllOtherContributionsAmt | 0 | 80985 |
| IRS990/BackupWthldComplianceInd | 0 | false |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | WILLIAM MAHARAY |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 3014326585 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 18932 KEEDYSVILLE ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | KEEDYSVILLE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 21756 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 30219 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 47290 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 80985 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 5600 |
| IRS990/CYInvestmentIncomeAmt | 0 | 12022 |
| IRS990/CYOtherExpensesAmt | 0 | 32984 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 54423 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 38584 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 93007 |
| IRS990/DAFExcessBusinessHoldingsInd | 0 | false |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | THE MISSION OF THE SAVE HISTORIC ANTIETAM FOUNDATION IS THE PRESERVATION AND PROTECTION OF HISTORIC SITES WITHIN THE ANTIETAM VALLEY THAT ARE RELATED TO THE BATTLE OF ANTIETAM, THE MARYLAND CAMPAIGN, OR OTHER CIVIL WAR ACTIVITY IN THE REGION. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DistributionToDonorInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 10000 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 33777 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 100 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 100 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 4807 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 4807 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 12 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 13 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 14 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 15 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 8.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 0.50 |
| 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/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| 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/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | THOMAS CLEMENS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | DENNIS FRYE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | PAULA REED |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | WILLIAM MAHARAY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | JOHN SCHILDT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | MARY ABROE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | GORDON DAMMANN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DAVID LANGBART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | HARRY SMELTZER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | SHARON MURRAY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | KEVIN PAWLAK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | JIM BROOMALL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | HENRY STILES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | JOHN BANKS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | KATHERINE SHEPPARD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | ROGERS M FRED |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| 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/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 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/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE - ENDED DECEMBER 31 2024 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE - ENDED DECEMBER 31 2024 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | TRUSTEE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1986 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 16 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 5600 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 5600 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | true |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 93007 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 16 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 686 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 686 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 255 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 255 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 2880 |
| IRS990/InvestmentIncomeGrp/RelatedOrExemptFuncIncomeAmt | 0 | 12022 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 12022 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 276177 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 328093 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 291675 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 291675 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 291675 |
| IRS990/LegalDomicileStateCd | 0 | MD |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | false |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | THE MISSION OF THE SAVE HISTORIC ANTIETAM FOUNDATION IS THE PRESERVATION AND PROTECTION OF HISTORIC SITES WITHIN THE ANTIETAM VALLEY THAT ARE RELATED TO THE BATTLE OF ANTIETAM, THE MARYLAND CAMPAIGN, OR OTHER CIVIL WAR ACTIVITY IN THE REGION. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 600951 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 667058 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 11684 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 600951 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 657058 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 1851 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 1851 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 154 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 154 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | LOSS ON INVENTORY-WRITE OFF |
| IRS990/OtherExpensesGrp/Desc | 1 | MAINTENANCE AND REPAIRS |
| IRS990/OtherExpensesGrp/Desc | 2 | PRINTING AND PUBLICATION |
| IRS990/OtherExpensesGrp/Desc | 3 | REFUND-SHARPSBURGTOWN-GRANT |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 2880 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 4790 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 1365 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 15000 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 2880 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 4790 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 1365 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 15000 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | THOMAS CLEMENS |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 201412 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 22500 |
| IRS990/PYInvestmentIncomeAmt | 0 | -100263 |
| IRS990/PYOtherExpensesAmt | 0 | 11709 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 66940 |
| IRS990/PYTotalExpensesAmt | 0 | 34209 |
| IRS990/PYTotalRevenueAmt | 0 | 101149 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 54423 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 80985 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 201412 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 71787 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 70892 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 24099 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 449175 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 12022 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 10640 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 6512 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 9410 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 6761 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 45345 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 1000 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 332 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 1332 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.90570 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.90530 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 449092 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 83 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 80985 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 201412 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 71787 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 70892 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 24099 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 449175 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 495852 |
| 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 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | true |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 291675 |
| IRS990ScheduleD/OtherLandBuildingsGrp/InvestmentCostOrOtherBasisAmt | 0 | 291675 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 291675 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | true |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 0 | 5000 |
| IRS990ScheduleI/RecipientTable/IRCSectionDesc | 0 | 501C3 |
| IRS990ScheduleI/RecipientTable/PurposeOfGrantTxt | 0 | BATTLEFIELD PRESERVATION |
| IRS990ScheduleI/RecipientTable/RecipientBusinessName/BusinessNameLine1Txt | 0 | AMERICAN BATTLEFIELD TRUST |
| IRS990ScheduleI/RecipientTable/RecipientEIN | 0 | 541426643 |
| IRS990ScheduleI/RecipientTable/USAddress/AddressLine1Txt | 0 | 1030 15TH STREET NW STE 900 EAST |
| IRS990ScheduleI/RecipientTable/USAddress/CityNm | 0 | WASHINGTON |
| IRS990ScheduleI/RecipientTable/USAddress/StateAbbreviationCd | 0 | DC |
| IRS990ScheduleI/RecipientTable/USAddress/ZIPCd | 0 | 20005 |
| IRS990ScheduleI/SupplementalInformationDetail/ExplanationTxt | 0 | THESE TYPES OF ASSISTANCE ARE GIVEN TO PRESERVE AND PROTECT HISTORIC SITES RELATED TO THE BATTLE OF ANTIETAM, THE MARYLANDCAMPAIGN, OR OTHER CIVIL WAR ACTIVITY IN THE REGION. THESE TYPES OF ASSISTANCE DO NOT NEED MONITORING. |
| IRS990ScheduleI/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Monitoring procedures (Part I, line 2) |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | SAVE HISTORIC ANTIETAM FOUNDATION, INC. DOES NOT HAVE ANY COMMITTEES. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE EXECUTIVE COMMITTEE, WHICH CONSISTS OF FIVE INDIVIDUALS, REVIEWS THE FORM 990 PRIOR TO FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | COPIES OF THE GOVERNING DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Committee meeting documentation Part VI line 8b |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Form 990 governing body review Part VI line 11 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Governing documents etc available to public Part VI line 19 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | MD |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxableDistributionsInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 600951 |
| IRS990/TotalAssetsEOYAmt | 0 | 667058 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 600951 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 667058 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 80985 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 4807 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 33777 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 38584 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 600951 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 667058 |
| IRS990/TotalOtherCompensationAmt | 0 | 0 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 33777 |
| IRS990/TotalReportableCompFromOrgAmt | 0 | 0 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 12022 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 93007 |
| IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/TotalVolunteersCnt | 0 | 16 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 600951 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 667058 |
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