Liabilities / Assets
24th percentile
Higher debt load relative to assets than 24% of similar nonprofits.
EIN 52-0852975 • 501(c)3 • Baltimore, MD
Profile
The museum is dedicated to preserving baltimore's public transportation history, especially the street railway era.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
24th percentile
Higher debt load relative to assets than 24% of similar nonprofits.
Liabilities / Revenue
37th percentile
Higher debt load relative to revenue than 37% of similar nonprofits.
Net Margin
6th percentile
Higher net margin than 6% of similar nonprofits.
Top Officer Pay
40th percentile
Higher top officer pay than 40% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
46th percentile
Faster asset growth than 46% of similar nonprofits.
Revenue Growth
9th percentile
Faster revenue growth than 9% of similar nonprofits.
Assets
Up$2,494,302
Up $50,085 (+2.0%) from 2023
Liabilities
Down$4,510
Down $290 (-6.0%) from 2023
Net Assets
Up$2,489,792
Up $50,375 (+2.1%) from 2023
Revenue
Down$177,127
Down $94,266 (-35%) from 2023
Expenses
Up$278,344
Up $88,223 (+46%) from 2023
Net Income
Down-$101,217
Down $182,489 (-225%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
The museum is dedicated to preserving baltimore's public transportation history, especially the street railway era.
Preserving baltimore's public transportation history, especially the street railway era.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments Other Securities | $1,423,682 | $1,627,822 | ▲ $204,140 |
| Land, Buildings, and Equipment, Net | $578,047 | $562,941 | ▼ $15,106 |
| Savings and Temporary Cash Investments | $193,587 | $196,232 | ▲ $2,645 |
| Cash and Non-Interest-Bearing Accounts | $215,897 | $80,220 | ▼ $135,677 |
| Inventories for Sale or Use | $16,236 | $15,522 | ▼ $714 |
| Prepaid Expenses and Deferred Charges | $11,268 | $11,565 | ▲ $297 |
| Pledges and Grants Receivable | $5,500 | $0 | ▼ $5,500 |
| Total Assets | $2,444,217 | $2,494,302 | ▲ $50,085 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $4,500 | $4,210 | ▼ $290 |
| Other Liabilities | $300 | $300 | → $0 |
| Total Liabilities | $4,800 | $4,510 | ▼ $290 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $2,289,313 | $2,330,071 | ▲ $40,758 |
| Net Assets With Donor Restrictions | $150,104 | $159,721 | ▲ $9,617 |
| Total Net Assets Fund Balance | $2,439,417 | $2,489,792 | ▲ $50,375 |
| Total Liabilities and Net Assets / Fund Balance | $2,444,217 | $2,494,302 | ▲ $50,085 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $410,871 | $228,590 | $639,461 |
| Leasehold Improvements | $152,070 | $97,220 | $249,290 |
| Other Securities | $740,256 | - | - |
| Name | Title |
|---|---|
| JOHN J O'NEILL JR | President |
| Edward M Amrhein | Admin Vice President |
| Christopher M Mcnally | Executive Vice President |
| Mark E Dawson | Vice President Curator |
| David Wilson | Member |
| Justin J Thillman | Member |
| Kevin a Mueller | Recording Secretary |
| Christopher J Howell | Treasurer |
| John D La Costa | V.p. of Engineering |
| Line Item | Amount |
|---|---|
| Other Expenses | $278,344 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Fees for Services Other | $102,430 | $7,413 | - | $109,843 |
| Depreciation Depletion | $25,174 | - | - | $25,174 |
| Fees for Services Accounting | - | $25,150 | - | $25,150 |
| Insurance | $23,533 | - | - | $23,533 |
| Occupancy | $17,470 | - | - | $17,470 |
| Advertising | $10,296 | - | - | $10,296 |
| Fees for Service Investment Mgmnt Fees | - | $6,562 | - | $6,562 |
| Office Expenses | $3,569 | $1,419 | - | $4,988 |
| Other Expenses | $50,462 | $4,866 | - | $4,866 |
| Total Functional Expenses | $232,934 | $45,410 | $0 | $278,344 |
| Line Item | Amount |
|---|---|
| Total Expenses per Form 990 | $278,344 |
| Total Expenses per Audited Statements | $276,503 |
| Expenses per Audited Statements | $271,782 |
| Expenses Not Reported on Financial Statements | $6,562 |
| Expenses Not Reported on Form 990 | $4,721 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $3,265 |
| Fundraising Direct Expenses | $0 |
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Reserve for Undeemed Token | $300 |
“All active members of the board have voting privileges. The trustees are elected by the museum's members every 3 years, with 1/3 of the board of trustees being up for election each year. The officers are elected annually by the board of trustees.”
“The board of directors hold a monthly meeting where all material decisions affecting the museum are discussed and a vote is held to determine approval of the decision.”
“The board of directors hold a meeting where the 990 form is reviewed and approved by all members prior to filing.”
“The museum provides copies of its governing documents and financial statements to the public upon request.”
“Other professional fees: program service expenses 102,430. Management and general expenses 7,413. Fundraising expenses 0. Total expenses 109,843.”
“The museum's board of directors, under the guidance of the treasurer,christopher howell, reviews and assumes responsibility for oversight of the audit of its financial statements and the form 990. This oversight process has not changed from the previous year.”
“Cost of goods sold -4,721.”
“Cost of goods sold 4,721.”
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 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 4500 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 4210 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | PRESERVING BALTIMORE'S PUBLIC TRANSPORTATION HISTORY, ESPECIALLY THE STREET RAILWAY ERA. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 10296 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 10296 |
| IRS990/AllOtherContributionsAmt | 0 | 55459 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | CHRISTOPHER HOWELL |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 4105470264 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 28 GUNFALLS GARTH |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | BALTIMORE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 21236 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 215897 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 80220 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 0 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 0 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CostOfGoodsSoldAmt | 0 | 4721 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 76424 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 59750 |
| IRS990/CYOtherExpensesAmt | 0 | 278344 |
| IRS990/CYOtherRevenueAmt | 0 | 9357 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 31596 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -101217 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 278344 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 177127 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 25174 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 25174 |
| IRS990/Desc | 0 | MUSEUM IS ENGAGED IN THE MAINTENANACE, OPERATION AND RESTORATION OF STREETCARS, TRACKLESS TROLLEYS, BUSES AND SUBWAY CARS WITH HOSTORIC VALUE FOR EDUCATION, PRESERVATION AND ENJOYMENT OF THE GENERAL PUBLIC. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 0 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 150104 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 159721 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 232934 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 25150 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 25150 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 7413 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 102430 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 109843 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 6562 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 6562 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 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/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/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | 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/PersonNm | 0 | JOHN J O'NEILL JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | CHRISTOPHER M MCNALLY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | CHRISTOPHER J HOWELL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | KEVIN A MUELLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | EDWARD M AMRHEIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JOHN D LA COSTA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MARK E DAWSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DAVID WILSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JUSTIN J THILLMAN |
| 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/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/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | EXECUTIVE VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | RECORDING SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | ADMIN VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | V.P. OF ENGINEERING |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | VICE PRESIDENT CURATOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | MEMBER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1966 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 0 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 3265 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 1293 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -15798 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 1293 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 9202 |
| IRS990/GrossReceiptsAmt | 0 | 206848 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 10813 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 9 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 23533 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 23533 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 16236 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 15522 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 74255 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 74255 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 1423682 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 1627822 |
| IRS990/IRPDocumentCnt | 0 | 1 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 325810 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 578047 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 562941 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 888751 |
| IRS990/LegalDomicileStateCd | 0 | MD |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 0 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 25000 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembershipDuesAmt | 0 | 20965 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE MUSEUM IS DEDICATED TO PRESERVING BALTIMORE'S PUBLIC TRANSPORTATION HISTORY, ESPECIALLY THE STREET RAILWAY ERA. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2439417 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2489792 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -14505 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -14505 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 3265 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 3265 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 6092 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 6092 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 151592 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2289313 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2330071 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 17470 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 17470 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1419 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 3569 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 4988 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | STATION OPERATING EXPEN |
| IRS990/OtherExpensesGrp/Desc | 1 | BANK CHARGES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 4866 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 50462 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 50462 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 4866 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 300 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 300 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 5500 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 11268 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 11565 |
| IRS990/PrincipalOfficerNm | 0 | CHRISTOPHER MCNALLY |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611710 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | MUSEUM INCOME |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 31596 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 31596 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 125247 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 71315 |
| IRS990/PYOtherExpensesAmt | 0 | 190121 |
| IRS990/PYOtherRevenueAmt | 0 | 5401 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 69430 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 81272 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/PYTotalExpensesAmt | 0 | 190121 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 271393 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -101217 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 1 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
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| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 196232 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 76424 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 125247 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 476417 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 288773 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 473763 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 1440624 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 74255 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 71315 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 64536 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 41319 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 47615 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 299040 |
| IRS990ScheduleA/GrossReceiptsRltdActivitiesAmt | 0 | 150010 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.35330 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.50800 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 614575 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 826049 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 76424 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 125247 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 476417 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 288773 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 473763 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 1440624 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 1739664 |
| 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 | 1 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 410871 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 228590 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 639461 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 4721 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 6562 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 271782 |
| IRS990ScheduleD/InvestmentExpensesNotIncld2Amt | 0 | 6562 |
| IRS990ScheduleD/InvestmentExpensesNotIncldAmt | 0 | 6562 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 152070 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt | 0 | 97220 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 249290 |
| IRS990ScheduleD/NetUnrealizedGainsInvstAmt | 0 | 151591 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 4721 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 300 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | RESERVE FOR UNDEEMED TOKEN |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | -4721 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 0 | 366050 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 1 | 32818 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 2 | 488698 |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 3 | 740256 |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 0 | COMMON STOCKS |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 1 | CORPORATE BONDS FIXED INCOME |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 2 | EXCHANGE-TRADED & CLOSED-END FUNDS |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 3 | MUTUAL FUNDS - OPEN-END |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 0 | F |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 1 | F |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 2 | F |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 3 | F |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 151591 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 1841 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 175286 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | COST OF GOODS SOLD -4,721. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | COST OF GOODS SOLD 4,721. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART XI, LINE 4B - OTHER ADJUSTMENTS: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | PART XII, LINE 2D - OTHER ADJUSTMENTS: |
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| IRS990ScheduleD/TotalBookValueSecuritiesAmt | 0 | 1627822 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 278344 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 300 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 177127 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 326877 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 276503 |
| IRS990/ScheduleJRequiredInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | ALL ACTIVE MEMBERS OF THE BOARD HAVE VOTING PRIVILEGES. THE TRUSTEES ARE ELECTED BY THE MUSEUM'S MEMBERS EVERY 3 YEARS, WITH 1/3 OF THE BOARD OF TRUSTEES BEING UP FOR ELECTION EACH YEAR. THE OFFICERS ARE ELECTED ANNUALLY BY THE BOARD OF TRUSTEES. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE BOARD OF DIRECTORS HOLD A MONTHLY MEETING WHERE ALL MATERIAL DECISIONS AFFECTING THE MUSEUM ARE DISCUSSED AND A VOTE IS HELD TO DETERMINE APPROVAL OF THE DECISION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | THE BOARD OF DIRECTORS HOLD A MEETING WHERE THE 990 FORM IS REVIEWED AND APPROVED BY ALL MEMBERS PRIOR TO FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE MUSEUM PROVIDES COPIES OF ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS TO THE PUBLIC UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | OTHER PROFESSIONAL FEES: PROGRAM SERVICE EXPENSES 102,430. MANAGEMENT AND GENERAL EXPENSES 7,413. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 109,843. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | THE MUSEUM'S BOARD OF DIRECTORS, UNDER THE GUIDANCE OF THE TREASURER,CHRISTOPHER HOWELL, REVIEWS AND ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF ITS FINANCIAL STATEMENTS AND THE FORM 990. THIS OVERSIGHT PROCESS HAS NOT CHANGED FROM THE PREVIOUS YEAR. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PART VI, SECTION A, LINE 7A |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PART VI, SECTION A, LINE 7B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART VI, SECTION B, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART VI, SECTION C, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PART IX, LINE 11G |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 5 | FORM 990, PART XII, LINE 2C: |
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| IRS990/SignificantChangeInd | 0 | 0 |
| IRS990/SignificantNewProgramSrvcInd | 0 | 0 |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | MD |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | 0 |
| IRS990/SubjectToProxyTaxInd | 0 | 0 |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | 0 |
| IRS990/TaxablePartyNotificationInd | 0 | 0 |
| IRS990/TaxExemptBondsInd | 0 | 0 |
| IRS990/TerminateOperationsInd | 0 | 0 |
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| IRS990/TotalAssetsEOYAmt | 0 | 2494302 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 2444217 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 2494302 |
| IRS990/TotalCompGreaterThan150KInd | 0 | 0 |
| IRS990/TotalContributionsAmt | 0 | 76424 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 45410 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 232934 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 278344 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 4800 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 4510 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 4800 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 4510 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 2439417 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 2489792 |
| IRS990/TotalOtherCompensationAmt | 0 | 0 |
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| IRS990/TotalProgramServiceRevenueAmt | 0 | 31596 |
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| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 63015 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 37688 |
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