Skip to content
ProPublica Donate
ProPublica Donate

Tuolumne County Historical Society

  • Sonora, CA
  • Tax-exempt since April 1974
  • EIN: 23-7091689

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
$58.3k (2024)

Expenses
$66.9k (2024)

Total Assets
$346k (2024)

Total Liabilities
$838 (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

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$58,258
Expenses
$66,873
Net Income
-$8,615
Net Assets
$344,938
Notable Sources of Revenue Percent of Total Revenue
Contributions $27,879
47.9%
Program Services $229
0.4%
Investment Income $11,907
20.4%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $11,117
19.1%
Other Revenue $101
0.2%
Assets/Debt
Total Assets $345,776
Total Liabilities $838
Net Assets $344,938
Compensation
Key Employees and Officers Compensation Other
Linda Emerson (Memb Secretary) $0 $0
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Director) $0 $0
Charles Holland (President) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Erika Lawson (Director) $0 $0
Mercedes Tune (Director) $0 $0
Michael Ghiorso (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Nov. 18, 2025

Short form 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 990-EZ
Revenue
$43,923
Expenses
$50,231
Net Income
-$6,308
Net Assets
$353,553
Notable Sources of Revenue Percent of Total Revenue
Contributions $22,995
52.4%
Program Services $81
0.2%
Investment Income $4,594
10.5%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $6,628
15.1%
Other Revenue $115
0.3%
Assets/Debt
Total Assets $353,553
Total Liabilities $0
Net Assets $353,553
Compensation
Key Employees and Officers Compensation Other
Linda Emerson (Director) $0 $0
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (President) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Lisa Mayo (Director) $0 $0
Janet Montano (Director) $0 $0
Michael Ghiorso (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Nov. 14, 2024

Short form 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 990-EZ
Revenue
$45,964
Expenses
$39,690
Net Income
$6,274
Net Assets
$359,861
Notable Sources of Revenue Percent of Total Revenue
Contributions $29,436
64.0%
Program Services $648
1.4%
Investment Income $192
0.4%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $4,123
9.0%
Other Revenue $0
Assets/Debt
Total Assets $359,861
Total Liabilities $0
Net Assets $359,861
Compensation
Key Employees and Officers Compensation Other
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (President) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Lisa Mayo (Director) $0 $0
Janet Montano (Director) $0 $0
Michael Ghiorso (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Feb. 16, 2023

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

View Filing
XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$91,195
Expenses
$35,560
Net Income
$55,635
Net Assets
$353,587
Notable Sources of Revenue Percent of Total Revenue
Contributions $78,783
86.4%
Program Services $324
0.4%
Investment Income $176
0.2%
Net Fundraising -$360
Sales of Assets $0
Net Inventory Sales $4,282
4.7%
Other Revenue $0
Assets/Debt
Total Assets $353,587
Total Liabilities $0
Net Assets $353,587
Compensation
Key Employees and Officers Compensation Other
Dan Blake (Director) $0 $0
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (President) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Lisa Mayo (Director) $0 $0
Janet Montano (Director) $0 $0
Michael Ghiorso (Director) $0 $0
Sherry Blake (2 Nd Vp) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 11, 2022

Short form 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 990-EZ
Revenue
$29,190
Expenses
$41,784
Net Income
-$12,594
Net Assets
$297,952
Notable Sources of Revenue Percent of Total Revenue
Contributions $14,520
49.7%
Program Services $943
3.2%
Investment Income $164
0.6%
Net Fundraising $831
2.8%
Sales of Assets $0
Net Inventory Sales $1,247
4.3%
Other Revenue $0
Assets/Debt
Total Assets $297,952
Total Liabilities $0
Net Assets $297,952
Compensation
Key Employees and Officers Compensation Other
Dan Blake (Director) $0 $0
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (President) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Lisa Mayo (Director) $0 $0
Janet Montano (Director) $0 $0
Michael Ghiorso (Director) $0 $0
Sherry Blake (2 Nd Vp) $0 $0
+ View more people

Document Links

990-EZ
Filed on Aug. 30, 2021

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$91,206
Expenses
$67,419
Net Income
$23,787
Net Assets
$310,546
Notable Sources of Revenue Percent of Total Revenue
Contributions $72,198
79.2%
Program Services $2,344
2.6%
Investment Income $193
0.2%
Net Fundraising $1,154
1.3%
Sales of Assets $0
Net Inventory Sales $7,642
8.4%
Other Revenue $0
Assets/Debt
Total Assets $310,546
Total Liabilities $0
Net Assets $310,546
Compensation
Key Employees and Officers Compensation Other
Dan Blake (Director) $0 $0
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (President) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Lisa Mayo (Director) $0 $0
Janet Montano (Director) $0 $0
Michael Ghiorso (Director) $0 $0
Sherry Blake (2 Nd Vp) $0 $0
+ View more people

Document Links

990-EZ
Filed on Aug. 12, 2020

Short form 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 990-EZ
Revenue
$60,009
Expenses
$62,092
Net Income
-$2,083
Net Assets
$286,759
Notable Sources of Revenue Percent of Total Revenue
Contributions $41,601
69.3%
Program Services $2,296
3.8%
Investment Income $177
0.3%
Net Fundraising $1,514
2.5%
Sales of Assets $0
Net Inventory Sales $9,308
15.5%
Other Revenue $13
0.0%
Assets/Debt
Total Assets $288,284
Total Liabilities $1,525
Net Assets $286,759
Compensation
Key Employees and Officers Compensation Other
Angela Brown (President & Ceo) $0 $0
Cheri Q Holmes (Treasurer) $0 $0
Linda Crocker (Director) $0 $0
Sandy Fisher (Director) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (1st Vp) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Lisa Mayo (Director) $0 $0
Janet Montano (Director) $0 $0
Michael Ghiorso (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 14, 2019

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$57,036
Expenses
$50,670
Net Income
$6,366
Net Assets
$288,809
Notable Sources of Revenue Percent of Total Revenue
Contributions $20,264
35.5%
Program Services $3,399
6.0%
Investment Income $172
0.3%
Net Fundraising $2,996
5.3%
Sales of Assets $0
Net Inventory Sales $21,770
38.2%
Other Revenue $25
0.0%
Assets/Debt
Total Assets $291,706
Total Liabilities $2,897
Net Assets $288,809
Compensation
Key Employees and Officers Compensation Other
Angela Brown (President & Ceo) $0 $0
Janet Montano (Director) $0 $0
Joseph Celentano (Treasurer) $0 $0
Frances Gardner (2 Nd Vp) $0 $0
Kathy Boone (Memb Secretary) $0 $0
Charles Holland (1st Vp) $0 $0
Betty Sparagna (Recording Sec) $0 $0
Bonnie Summers (Director) $0 $0
Sandy Fisher (Director) $0 $0
Linda Crocker (Director) $0 $0
Lisa Mayo (Director) $0 $0
Michael Ghiorso (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on June 28, 2018

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$40,849
Expenses
$48,448
Net Income
-$7,599
Net Assets
$282,443
Notable Sources of Revenue Percent of Total Revenue
Contributions $21,964
53.8%
Program Services $2,630
6.4%
Investment Income $195
0.5%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $5,660
13.9%
Other Revenue $0
Assets/Debt
Total Assets $283,824
Total Liabilities $1,381
Net Assets $282,443

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$67,691
Expenses
$43,566
Net Income
$24,125
Net Assets
$289,794
Notable Sources of Revenue Percent of Total Revenue
Contributions $33,312
49.2%
Program Services $2,135
3.2%
Investment Income $195
0.3%
Net Fundraising $83
0.1%
Sales of Assets $0
Net Inventory Sales $22,771
33.6%
Other Revenue $0
Assets/Debt
Total Assets $303,627
Total Liabilities $13,833
Net Assets $289,794

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$46,167
Expenses
$50,226
Net Income
-$4,059
Net Assets
$266,368
Notable Sources of Revenue Percent of Total Revenue
Contributions $24,282
52.6%
Program Services $4,710
10.2%
Investment Income $193
0.4%
Net Fundraising $547
1.2%
Sales of Assets $185
0.4%
Net Inventory Sales $5,990
13.0%
Other Revenue $0
Assets/Debt
Total Assets $273,924
Total Liabilities $7,556
Net Assets $266,368

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$51,184
Expenses
$54,397
Net Income
-$3,213
Net Assets
$270,427
Notable Sources of Revenue Percent of Total Revenue
Contributions $26,294
51.4%
Program Services $3,815
7.5%
Investment Income $215
0.4%
Net Fundraising $382
0.7%
Sales of Assets $541
1.1%
Net Inventory Sales $9,977
19.5%
Other Revenue $0
Assets/Debt
Total Assets $276,579
Total Liabilities $6,152
Net Assets $270,427

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$50,813
Expenses
$47,977
Net Income
$2,836
Net Assets
$273,640
Notable Sources of Revenue Percent of Total Revenue
Contributions $16,633
32.7%
Program Services $2,521
5.0%
Investment Income $370
0.7%
Net Fundraising $5,249
10.3%
Sales of Assets $0
Net Inventory Sales $15,330
30.2%
Other Revenue $0
Assets/Debt
Total Assets $273,686
Total Liabilities $46
Net Assets $273,640

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$96,161
Expenses
$66,012
Net Income
$30,149
Net Assets
$270,804
Notable Sources of Revenue Percent of Total Revenue
Contributions $74,877
77.9%
Program Services $2,580
2.7%
Investment Income $2,031
2.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $6,248
6.5%
Other Revenue $0
Assets/Debt
Total Assets $271,375
Total Liabilities $571
Net Assets $270,804

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2010

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.
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
990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

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-EZ

Short form 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-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-EZ

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

PDF

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-EZ

Short form 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-EZ

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

PDF
PDF (2 of 2)

Fiscal Year Ending Dec.
2001

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
PDF (2 of 2)

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.

API

The data powering this website is available programmatically, via an API. Read the API documentation »

See an issue with the data?

Contact Us

About Nonprofit Explorer

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.

Updated