Glenn L Martin Maryland Aviation Museum Inc

Middle River, MD
Tax-exempt since Oct. 1990
EIN: 52-1683696

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Type of Nonprofit

Designated as a 501(c)(3) Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Arts, Culture and Humanities / History Museums (NTEE)

Donations to this organization are tax deductible.

Revenue

$136k (2024)

Expenses

$165k (2024)

Total Assets

$992k (2024)

Total Liabilities

$0 (2024)

Source: Form 990 tax filings from 2011 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2024

Revenue

$136,329

Expenses

$165,229

Net Income

-$28,900

Net Assets

$991,811

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$100,362	73.6%
Program Services	$24,691	18.1%
Investment Income	$7,516	5.5%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$1,594	1.2%
Other Revenue	$481	0.4%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$69,396	42.0%
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$991,811
Total Liabilities	$0
Net Assets	$991,811

Compensation

Key Employees and Officers	Compensation	Related	Other
Gustavus Mcleod (Executive Dir.)	$69,396	$0	$0
James Jurkowski (Chairman)	$0	$0	$0
John Bartkowiak (Director)	$0	$0	$0
Phyllis Fullem (Director)	$0	$0	$0
Jason Mueller (Director)	$0	$0	$0
John Einhaus (Director)	$0	$0	$0
Jerry Hinshaw (Director)	$0	$0	$0
Stanley Piet (Director)	$0	$0	$0
Reginald Booker (Director)	$0	$0	$0
Thomas Jones (Director)	$0	$0	$0
Lt Col Jeffrey Woolford (Director)	$0	$0	$0

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990

Filed on Sept. 17, 2025

Primary tax return for a nonprofit’s activities, finances, and governance

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Fiscal Year Ending Dec.
2023

Revenue

$146,538

Expenses

$180,131

Net Income

-$33,593

Net Assets

$713,881

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$96,234	65.7%
Program Services	$20,786	14.2%
Investment Income	$7,465	5.1%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$6,500	4.4%
Net Inventory Sales	$14,088	9.6%
Other Revenue	$106	0.1%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$63,567	35.3%
Professional Fundraising Fees	$0
Other Salaries and Wages	$2,696	1.5%

Assets/Debt
Total Assets	$714,417
Total Liabilities	$536
Net Assets	$713,881

Compensation

Key Employees and Officers	Compensation	Related	Other
Gustavus Mc Leod (Executive Dir.)	$63,567	$0	$0
Jim Jurkowski (Chairman)	$0	$0	$0
Craig Jackson (Secretary)	$0	$0	$0
Janet Neilson (Treasurer)	$0	$0	$0
John Bartkowiak (Director)	$0	$0	$0
Phyllis Fullem (Director)	$0	$0	$0
Jason Mueller (Director)	$0	$0	$0
John Einhaus (Director)	$0	$0	$0
Jerry Hinshaw (Director)	$0	$0	$0
Stanley Piet (Director)	$0	$0	$0
Reginald Booker (Director)	$0	$0	$0
Thomas Jones (Director)	$0	$0	$0
Lt Col Jeffrey Woolford (Director)	$0	$0	$0

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990

Filed on Nov. 8, 2024

Primary tax return for a nonprofit’s activities, finances, and governance

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Fiscal Year Ending Dec.
2022

Revenue

$120,822

Expenses

$160,267

Net Income

-$39,445

Net Assets

$693,901

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$94,505	78.2%
Program Services	$16,703	13.8%
Investment Income	$23	0.0%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$600	0.5%
Net Inventory Sales	$5,819	4.8%
Other Revenue	$1,848	1.5%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$33,836	21.1%
Professional Fundraising Fees	$0
Other Salaries and Wages	$2,991	1.9%

Assets/Debt
Total Assets	$693,901
Total Liabilities	$0
Net Assets	$693,901

Compensation

Key Employees and Officers	Compensation	Related	Other
Gustavus Mc Leod (Executive Dir.)	$33,836	$0	$0
Joseph Corteal (Chairman)	$0	$0	$0
Craig Jackson (Secretary)	$0	$0	$0
Ted Cooper (Director)	$0	$0	$0
John Bartkowiak (Director)	$0	$0	$0
Phyllis Fullem (Director)	$0	$0	$0
Kevin O'neill (Director)	$0	$0	$0
John Einhaus (Director)	$0	$0	$0
Jerry Hinshaw (Director)	$0	$0	$0
Stanley Piet (Director)	$0	$0	$0
Jim Jurkowski (Director)	$0	$0	$0
Thomas Jones (Director)	$0	$0	$0
Lt Col Jeffrey Woolford (Director)	$0	$0	$0

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990

Filed on May 31, 2023

Primary tax return for a nonprofit’s activities, finances, and governance

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XML

Fiscal Year Ending Dec.
2021

Revenue

$139,551

Expenses

$66,210

Net Income

$73,341

Net Assets

$792,973

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$106,502	76.3%
Program Services	$15,763	11.3%
Investment Income	$118	0.1%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$1,521	1.1%
Sales of Assets	$7,955	5.7%
Net Inventory Sales	$6,855	4.9%
Other Revenue	$837	0.6%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$800,971
Total Liabilities	$7,998
Net Assets	$792,973

Compensation

Key Employees and Officers	Compensation	Related	Other
Theresa Brinkerhoff (Treasurer)	$0	$0	$0
James Hayes (Secretary)	$0	$0	$0
Ted Cooper (Director)	$0	$0	$0
Richard Frattali (Director)	$0	$0	$0
Phyllis Fullem (Director)	$0	$0	$0
Kevin O'neill (Director)	$0	$0	$0
Joseph Toskes (Director)	$0	$0	$0
Joseph Corteal (Chairman)	$0	$0	$0
John Einhaus (Executive Dir.)	$0	$0	$0
Nancy Zellinger (Asst Executive Director)	$0	$0	$0
Stanley Piet (Archivist)	$0	$0	$0
Jane Toskes (Educational Director)	$0	$0	$0

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990

Filed on Nov. 3, 2022

Primary tax return for a nonprofit’s activities, finances, and governance

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Fiscal Year Ending Dec.
2020

Revenue

$955,237

Expenses

$910,034

Net Income

$45,203

Net Assets

$721,612

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$953,965	99.9%
Program Services	$0
Investment Income	$1,272	0.1%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$721,612
Total Liabilities	$0
Net Assets	$721,612

Compensation

Key Employees and Officers	Compensation	Related	Other
John Einhaus (Executive Director)	$0	$0	$0
Nancy Zellinger (Asst Executive Director)	$0	$0	$0
Stanley Piet (Archivist & Curator)	$0	$0	$0
James Hayes (Secretary)	$0	$0	$0
Theresa Brinkerhoff (Treasurer)	$0	$0	$0
Joseph Corteal (Director)	$0	$0	$0
Kevin O'neill (Director)	$0	$0	$0
Phyllis Fullem (Director)	$0	$0	$0
Rick Frattali (Director)	$0	$0	$0
Ted Cooper (Director)	$0	$0	$0
Paul Besse (Officer)	$0	$0	$0

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990

Filed on Aug. 19, 2021

Primary tax return for a nonprofit’s activities, finances, and governance

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2019

Revenue

$219,171

Expenses

$58,149

Net Income

$161,022

Net Assets

$678,259

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$188,064	85.8%
Program Services	$0
Investment Income	$3,411	1.6%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$27,696	12.6%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$13,303	22.9%
Professional Fundraising Fees	$4,342	7.5%
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$684,204
Total Liabilities	$5,945
Net Assets	$678,259

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2018

Revenue

$146,149

Expenses

$58,004

Net Income

$88,145

Net Assets

$617,081

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$124,226	85.0%
Program Services	$0
Investment Income	$1,713	1.2%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$20,210	13.8%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$627,081
Total Liabilities	$10,000
Net Assets	$617,081

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2017

Revenue

$129,477

Expenses

$77,941

Net Income

$51,536

Net Assets

$530,412

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$102,317	79.0%
Program Services	$0
Investment Income	$1,895	1.5%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$25,265	19.5%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$530,495
Total Liabilities	$83
Net Assets	$530,412

Compensation

Key Employees and Officers	Compensation	Related	Other
Ted Cooper (Executive Director)	$0	$0	$0
Nancy Zellinger (Exec Dir Assistant)	$0	$0	$0
Jeff Michael (Facility & Ops Dir)	$0	$0	$0
Karen Armacost (Finance Director)	$0	$0	$0
Jane Michael (Admin Director)	$0	$0	$0
Jim Hayes (Secretary)	$0	$0	$0
Stan Piet (Archivist)	$0	$0	$0
Theresa Brinkerhoff (Treasurer)	$0	$0	$0
Debra Wynn (Public Relations Director)	$0	$0	$0

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990

Filed on May 3, 2018

Primary tax return for a nonprofit’s activities, finances, and governance

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Fiscal Year Ending Dec.
2016

Revenue

$99,588

Expenses

$82,630

Net Income

$16,958

Net Assets

$354,082

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$14,225	14.3%
Program Services	$16,543	16.6%
Investment Income	$82	0.1%
Net Fundraising	$29,583	29.7%
Sales of Assets	$0
Net Inventory Sales	$13,471	13.5%
Other Revenue	$14,699	14.8%

Assets/Debt
Total Assets	$479,578
Total Liabilities	$125,496
Net Assets	$354,082

Compensation

Key Employees and Officers	Compensation	Other
Debi Wynn (Director Of Education)	$2,550	$0
Ted Cooper (Executive Director)	$0	$0
Nancy Zellinger (Asst Exec. Director)	$0	$0
Jane Michael (Administrator)	$0	$0
Beth Porter (Treasurer)	$0	$0
Stan Piet (Archivist)	$0	$0
Jeff Michael (Director Of Facilities)	$0	$0
Stuart Axilbund (Board Member)	$0	$0
James Hayes (Board Member)	$0	$0
Alexander Kline (Board Member)	$0	$0
Ernestino Pascal (Board Member)	$0	$0
Michael Simons (Board Member)	$0	$0
George Waicker (Board Member)	$0	$0
Guy Walsh (Board Member)	$0	$0
Sonny Tannan (Board Member)	$0	$0
William Zelenkas (Board Member)	$0	$0

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990-EZ

Filed on May 4, 2017

Short form tax return for a nonprofit’s activities, finances, and governance

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Fiscal Year Ending Dec.
2015

Revenue

$99,276

Expenses

$54,592

Net Income

$44,684

Net Assets

$337,124

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$66,773	67.3%
Program Services	$11,635	11.7%
Investment Income	$88	0.1%
Net Fundraising	$9,114	9.2%
Sales of Assets	$0
Net Inventory Sales	$2,399	2.4%
Other Revenue	$351	0.4%

Assets/Debt
Total Assets	$462,620
Total Liabilities	$125,496
Net Assets	$337,124

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2014

Revenue

$70,550

Expenses

$38,113

Net Income

$32,437

Net Assets

$396,824

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$34,699	49.2%
Program Services	$0
Investment Income	$100	0.1%
Net Fundraising	$15,018	21.3%
Sales of Assets	$0
Net Inventory Sales	$4,838	6.9%
Other Revenue	$8,192	11.6%

Assets/Debt
Total Assets	$478,805
Total Liabilities	$81,981
Net Assets	$396,824

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2013

Revenue

$33,839

Expenses

$59,802

Net Income

-$25,963

Net Assets

$131,021

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$11,060	32.7%
Program Services	$0
Investment Income	$104	0.3%
Net Fundraising	-$1,469
Sales of Assets	$0
Net Inventory Sales	$2,478	7.3%
Other Revenue	$14,663	43.3%

Assets/Debt
Total Assets	$131,021
Total Liabilities	$0
Net Assets	$131,021

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2012

Revenue

$97,091

Expenses

$67,892

Net Income

$29,199

Net Assets

$157,057

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$66,254	68.2%
Program Services	$0
Investment Income	$314	0.3%
Net Fundraising	$6,664	6.9%
Sales of Assets	$0
Net Inventory Sales	$3,210	3.3%
Other Revenue	$11,466	11.8%

Assets/Debt
Total Assets	$157,057
Total Liabilities	$0
Net Assets	$157,057

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2011

Revenue

$42,692

Expenses

$37,381

Net Income

$5,311

Net Assets

$127,809

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$13,450	31.5%
Program Services	$0
Investment Income	$267	0.6%
Net Fundraising	$16,327	38.2%
Sales of Assets	$0
Net Inventory Sales	$2,350	5.5%
Other Revenue	$3,883	9.1%

Assets/Debt
Total Assets	$127,809
Total Liabilities	$0
Net Assets	$127,809

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

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Updated December 22, 2025

Glenn L Martin Maryland Aviation Museum Inc

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $136k (2024)

Expenses $165k (2024)

Total Assets $992k (2024)

Total Liabilities $0 (2024)

Tax Filings by Year

Fiscal Year Ending Dec. 2024

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Dec. 2023

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Dec. 2022

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Dec. 2021

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Dec. 2020

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Dec. 2019

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Dec. 2018

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Dec. 2017

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Dec. 2016

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending Dec. 2015

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2014

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2013

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2012

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

Revenue

$136k (2024)

Expenses

$165k (2024)

Total Assets

$992k (2024)

Total Liabilities

$0 (2024)

Fiscal Year Ending Dec.
2024

Fiscal Year Ending Dec.
2023

Fiscal Year Ending Dec.
2022

Fiscal Year Ending Dec.
2021

Fiscal Year Ending Dec.
2020

Fiscal Year Ending Dec.
2019

Fiscal Year Ending Dec.
2018

Fiscal Year Ending Dec.
2017

Fiscal Year Ending Dec.
2016

Fiscal Year Ending Dec.
2015

Fiscal Year Ending Dec.
2014

Fiscal Year Ending Dec.
2013

Fiscal Year Ending Dec.
2012

Fiscal Year Ending Dec.
2011

Fiscal Year Ending Dec.
2010

Fiscal Year Ending Dec.
2009

Fiscal Year Ending Dec.
2008

Fiscal Year Ending Dec.
2007

Fiscal Year Ending Dec.
2005

Fiscal Year Ending Dec.
2004

Fiscal Year Ending Dec.
2003

Fiscal Year Ending Dec.
2002

Fiscal Year Ending Dec.
2001

Fiscal Year Ending Dec.
2000