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Martinez History Society

  • Martinez, CA
  • Tax-exempt since May 1983
  • EIN: 94-2374716

Organization summary

Type of Nonprofit

Designated as a 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.

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$65.6k (2024)

Expenses
$48.4k (2024)

Total Assets
$1.45M (2024)

Total Liabilities
$0 (2024)

Source: Form 990 tax filings from 2018 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

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$65,615
Expenses
$48,351
Net Income
$17,264
Net Assets
$1,453,169
Notable Sources of Revenue Percent of Total Revenue
Contributions $48,495
73.9%
Program Services $10,365
15.8%
Investment Income $6,084
9.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $671
1.0%
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 $1,453,169
Total Liabilities $0
Net Assets $1,453,169
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (President) $0 $0 $0
Roland Osage (Director) $0 $0 $0
Paul Kraintz (V.P. Membr) $0 $0 $0
Kevin Murray (Director) $0 $0 $0
Kathie O'connell (Director) $0 $0 $0
Kathy Braun (Fund Raising) $0 $0 $0
Julie Wilde (Treasurer) $0 $0 $0
Greg Travers (Director) $0 $0 $0
Christine Dean (Director) $0 $0 $0
Tim Farley (1 St V Pres) $0 $0 $0
William Wood (Director) $0 $0 $0
Vivian Rittenhouse (Director) $0 $0 $0
Eric Braun (Director) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Mary Lou Johnson (Director) $0 $0 $0
Keith Park (Director) $0 $0 $0
Danielle Pellegrini (Director) $0 $0 $0
Barbara Chambers (Secretary) $0 $0 $0
Jeanne Hilson (Director) $0 $0 $0
Marlene Thompson (Director) $0 $0 $0
Mary Goodman (Director) $0 $0 $0
Debbie Zamaria (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 12, 2025

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

View Filing
XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$41,832
Expenses
$36,092
Net Income
$5,740
Net Assets
$1,435,773
Notable Sources of Revenue Percent of Total Revenue
Contributions $39,358
94.1%
Program Services $9,380
22.4%
Investment Income $1,116
2.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising -$11,219
Sales of Assets $0
Net Inventory Sales $3,197
7.6%
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 $1,435,773
Total Liabilities $0
Net Assets $1,435,773
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (Dir Emeritus) $0 $0 $0
Jay Howard (Director) $0 $0 $0
Paul Kraintz (V.P. Membr) $0 $0 $0
Kevin Murray (Director) $0 $0 $0
Kathie O'connell (Director) $0 $0 $0
Kathy Braun (1 St V Pres) $0 $0 $0
Julie Wilde (Treasurer) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Maris Von Behren (Dir. Emeritus) $0 $0 $0
Wilma Telfer (Director) $0 $0 $0
Barbara Chambers (Secretary) $0 $0 $0
Mary Goodman (Director) $0 $0 $0
Tim Farley (Director) $0 $0 $0
Andrea Blachman Non Voting (Museum Director (Volunteer)) $0 $0 $0
+ View more people

Document Links

990
Filed on Oct. 31, 2024

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

View Filing
XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$52,362
Expenses
$24,585
Net Income
$27,777
Net Assets
$1,430,033
Notable Sources of Revenue Percent of Total Revenue
Contributions $43,073
82.3%
Program Services $6,095
11.6%
Investment Income $313
0.6%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $2,881
5.5%
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 $1,430,033
Total Liabilities $0
Net Assets $1,430,033
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (Dir Emeritus) $0 $0 $0
Jay Howard (Director) $0 $0 $0
Paul Kraintz (V.P. Membr) $0 $0 $0
Kevin Murray (Director) $0 $0 $0
Kathie O'connell (Director) $0 $0 $0
Kathy Braun (1 St V Pres) $0 $0 $0
Julie Wilde (Treasurer) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Maris Von Behren (Dir. Emeritus) $0 $0 $0
Wilma Telfer (Director) $0 $0 $0
Barbara Chambers (Secretary) $0 $0 $0
Mary Goodman (Director) $0 $0 $0
Tim Farley (Director) $0 $0 $0
Andrea Blachman Non Voting (Museum Director (Volunteer)) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 14, 2023

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$35,111
Expenses
$26,886
Net Income
$8,225
Net Assets
$1,402,229
Notable Sources of Revenue Percent of Total Revenue
Contributions $22,843
65.1%
Program Services $9,093
25.9%
Investment Income $23
0.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $3,152
9.0%
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 $1,402,229
Total Liabilities $0
Net Assets $1,402,229
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (President) $0 $0 $0
Paul Kraintz (2 Nd V Pres) $0 $0 $0
Kathie O'connell (Director) $0 $0 $0
Kathy Braun (1 St V Pres) $0 $0 $0
Andrea Blachman Non Voting (Museum Director) $0 $0 $0
Keith Park (Director) $0 $0 $0
Joseph Palmer (Director) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Jeanne Hilson Non Voting (Dir Emeritus) $0 $0 $0
Marlene Thompson Non Voting (Dir. Emeritus) $0 $0 $0
Linda Monroe (Treasurer) $0 $0 $0
Barbara Chambers (Secretary) $0 $0 $0
Virginia Bones (Director) $0 $0 $0
Maria Banuelos Connell (Director) $0 $0 $0
Mary Goodman (Director) $0 $0 $0
Carter Wilson (Director) $0 $0 $0
Andrea Blachman Non Voting (Museum Director (Volunteer)) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 15, 2022

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

View Filing
XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$43,354
Expenses
$25,597
Net Income
$17,757
Net Assets
$1,393,996
Notable Sources of Revenue Percent of Total Revenue
Contributions $26,604
61.4%
Program Services $12,220
28.2%
Investment Income $1,101
2.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $3,429
7.9%
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 $1,393,996
Total Liabilities $0
Net Assets $1,393,996
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (President) $0 $0 $0
Tracy Edwards Moore (Director) $0 $0 $0
Paul Kraintz (2 Nd V Pres) $0 $0 $0
James Wilson (Director) $0 $0 $0
Kathie O'connell (Director) $0 $0 $0
Kathy Braun (1 St V Pres) $0 $0 $0
Bill Wood (Director) $0 $0 $0
Andrea Blachman Non Voting (Museum Director) $0 $0 $0
Rick Aldridge (Director) $0 $0 $0
Keith Park (Director) $0 $0 $0
Joseph Palmer (Director) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Jeanne Hilson Non Voting (Dir Emeritus) $0 $0 $0
Marlene Thompson Non Voting (Dir. Emeritus) $0 $0 $0
Linda Monroe (Treasurer) $0 $0 $0
Barbara Chambers (Secretary) $0 $0 $0
Virginia Bones (Director) $0 $0 $0
Mary Lou Johnson (Director) $0 $0 $0
Mary Goodman (Director) $0 $0 $0
Eric Braun (Director) $0 $0 $0
Andrea Blachman Non Voting (Museum Director (Volunteer)) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 8, 2021

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

View Filing
XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$41,674
Expenses
$31,889
Net Income
$9,785
Net Assets
$1,376,239
Notable Sources of Revenue Percent of Total Revenue
Contributions $27,595
66.2%
Program Services $8,960
21.5%
Investment Income $1,153
2.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising -$667
Sales of Assets $0
Net Inventory Sales $4,633
11.1%
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 $1,376,239
Total Liabilities $0
Net Assets $1,376,239
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (President) $0 $0 $0
Lita Gloor Little Left In 19 (1 St V Pres.) $0 $0 $0
Paul Kraintz (2 Nd V Pres) $0 $0 $0
Deborah Zamaria Left In 2019 (Secretary) $0 $0 $0
Kathie Parker (Treasurer) $0 $0 $0
Kathy Braun (1 Sr V Pres) $0 $0 $0
Harriett Burt Left In 2019 (Director) $0 $0 $0
Carolyn Boone Duncan Left (Director) $0 $0 $0
Cathy Ivers Left In 2019 (Director) $0 $0 $0
Dianna Matthias Left In 2019 (Director) $0 $0 $0
Joseph Palmer (Director) $0 $0 $0
Keith Park (Director) $0 $0 $0
Carter Wilson (Director) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Jeanne Hilson Non Voting (Dir Emeritus) $0 $0 $0
Marlene Thompson Non Voting (Dir. Emeritus) $0 $0 $0
Linda Monroe (Treasurer) $0 $0 $0
Barbara Chambers (Secretary) $0 $0 $0
Virginia Bones (Director) $0 $0 $0
Maria Banuelos Connell (Director) $0 $0 $0
Mary Goodman (Director) $0 $0 $0
Kathy O'connell (Director) $0 $0 $0
Keith Park (Director) $0 $0 $0
Andrea Blachman Non Voting (Museum Director (Volunteer)) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 13, 2020

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$63,683
Expenses
$87,309
Net Income
-$23,626
Net Assets
$1,366,454
Notable Sources of Revenue Percent of Total Revenue
Contributions $45,373
71.2%
Program Services $17,451
27.4%
Investment Income $859
1.3%
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 $1,366,454
Total Liabilities $0
Net Assets $1,366,454
Compensation
Key Employees and Officers Compensation Related Other
John Curtis (President) $0 $0 $0
Lita Gloor Little (1 St V Pres.) $0 $0 $0
Paul Kraintz (2 Nd V Pres) $0 $0 $0
Deborah Zamaria (Secretary) $0 $0 $0
Kathie Parker (Treasurer) $0 $0 $0
Kathy Braun (Director) $0 $0 $0
Harriett Burt (Director) $0 $0 $0
Carolyn Boone Duncan (Director) $0 $0 $0
Cathy Ivers (Director) $0 $0 $0
Dianna Matthias (Director) $0 $0 $0
Joseph Palmer (Director) $0 $0 $0
Keith Park (Director) $0 $0 $0
Carter Wilson (Director) $0 $0 $0
Kathy Yates (Director) $0 $0 $0
Jeanne Hilson Non Voting (Dir Emeritus) $0 $0 $0
Marlene Thompson Non Voting (Dir. Emeritus) $0 $0 $0
Andrea Blachman Non Voting (Museum Director (Volunteer)) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 16, 2019

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2009

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2008

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2007

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2006

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2005

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

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

PDF
990-EZ

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

PDF

Fiscal Year Ending Dec.
2004

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

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

PDF
PDF (2 of 2)

Fiscal Year Ending Dec.
2003

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2002

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

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

PDF
990-EZ

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

PDF

About This Data

What Is This Data?

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.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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