Mt Shasta Museum Association Inc

Sisson Museum
  • Mount Shasta, CA
  • Tax exemption issued: April 1983
  • EIN: 95-3764204

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.

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. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Organizations with gross receipts of less than $50,000 can file the form 990-N postcard filing, which doesn’t include financial details. All Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2025

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$227,971
Expenses
$128,746
Net Income
$99,225
Net Assets
$1,349,744
Notable Sources of Revenue Percent of Total Revenue
Contributions $159,938
70.2%
Program Services $17,543
7.7%
Investment Income $28,209
12.4%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $1,147
0.5%
Sales of Assets $0
Net Inventory Sales $20,736
9.1%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $45,015
35.0%
Assets/Debt
Total Assets $1,350,628
Total Liabilities $884
Net Assets $1,349,744
Compensation
Key Employees and Officers Compensation Related Other
Jim Mcchesney (President) $0 $0 $0
Jean Nels (Executive Dir.) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Julie Bennett (Director) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
David Tucker (Director) $0 $0 $0
John Fryer (Director) $0 $0 $0
Julie Cassidy (Vice President) $0 $0 $0
+ View more people

Document Links

990
Filed on May 12, 2026

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

View Filing
XML

Fiscal Year Ending Dec.
2024

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$229,747
Expenses
$105,764
Net Income
$123,983
Net Assets
$1,159,078
Notable Sources of Revenue Percent of Total Revenue
Contributions $173,747
75.6%
Program Services $18,199
7.9%
Investment Income $24,238
10.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $13,066
5.7%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $26,949
25.5%
Assets/Debt
Total Assets $1,159,235
Total Liabilities $157
Net Assets $1,159,078
Compensation
Key Employees and Officers Compensation Related Other
Jim Mcchesney (President) $0 $0 $0
Jean Nels (Executive Dir.) $0 $0 $0
Carrie Martin (Director) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Julie Bennett (Director) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
David Tucker (Director) $0 $0 $0
John Fryer (Director) $0 $0 $0
Julie Cassidy (Vice President) $0 $0 $0
+ View more people

Document Links

990
Filed on May 8, 2025

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$258,895
Expenses
$83,003
Net Income
$175,892
Net Assets
$975,011
Notable Sources of Revenue Percent of Total Revenue
Contributions $203,816
78.7%
Program Services $18,045
7.0%
Investment Income $17,116
6.6%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $19,542
7.5%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $16,938
20.4%
Assets/Debt
Total Assets $977,071
Total Liabilities $2,060
Net Assets $975,011
Compensation
Key Employees and Officers Compensation Related Other
Jim Mcchesney (Director) $0 $0 $0
Jean Nels (Pres/exec Direc) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Julie Bennett (Director) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
David Tucker (Vice President) $0 $0 $0
John Fryer (Director) $0 $0 $0
Julie Cassidy (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 29, 2024

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$182,481
Expenses
$124,882
Net Income
$57,599
Net Assets
$745,904
Notable Sources of Revenue Percent of Total Revenue
Contributions $141,999
77.8%
Program Services $16,615
9.1%
Investment Income $8,270
4.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $15,174
8.3%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $57,597
46.1%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $748,043
Total Liabilities $2,139
Net Assets $745,904
Compensation
Key Employees and Officers Compensation Related Other
Rosemary Romero (Executive Dir.) $57,576 $0 $0
Geoff Harkness (Director) $0 $0 $0
Jean Nels (President) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Julie Bennett (Director) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
David Tucker (Vice President) $0 $0 $0
John Fryer (Director) $0 $0 $0
Julie Cassady (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 16, 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
$182,112
Expenses
$79,443
Net Income
$102,669
Net Assets
$757,487
Notable Sources of Revenue Percent of Total Revenue
Contributions $151,044
82.9%
Program Services $7,168
3.9%
Investment Income $7,170
3.9%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $16,730
9.2%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $30,400
38.3%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $759,457
Total Liabilities $1,970
Net Assets $757,487
Compensation
Key Employees and Officers Compensation Related Other
Rosemary Ramaro (Executive Dir.) $30,400 $0 $0
Geoff Harkness (Director) $0 $0 $0
Jean Nels (President) $0 $0 $0
Linda Siegel (Director) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
David Tucker (Vice President) $0 $0 $0
John Fryer (Director) $0 $0 $0
Julie Cassady (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 30, 2022

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$129,330
Expenses
$64,424
Net Income
$64,906
Net Assets
$618,844
Notable Sources of Revenue Percent of Total Revenue
Contributions $122,110
94.4%
Program Services $0
Investment Income $7,075
5.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $145
0.1%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $5,384
8.4%
Assets/Debt
Total Assets $618,850
Total Liabilities $6
Net Assets $618,844
Compensation
Key Employees and Officers Compensation Related Other
Geoff Harkness (Director) $0 $0 $0
Joe Wirth (Director) $0 $0 $0
Linda Siegel (Director) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Jim Mcchesney (Vice President) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
David Tucker (Director) $0 $0 $0
John Fryer (President) $0 $0 $0
Julie Cassady (Director) $0 $0 $0
Jean Nels (Exec Dir/sec) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 24, 2021

Primary 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 Form 990
Revenue
$195,247
Expenses
$86,642
Net Income
$108,605
Net Assets
$527,344
Notable Sources of Revenue Percent of Total Revenue
Contributions $157,738
80.8%
Program Services $2,786
1.4%
Investment Income $7,319
3.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $2,583
1.3%
Sales of Assets $0
Net Inventory Sales $23,243
11.9%
Other Revenue $1,578
0.8%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $527,679
Total Liabilities $335
Net Assets $527,344
Compensation
Key Employees and Officers Compensation Related Other
Geoff Harkness (Director) $0 $0 $0
Joe Wirth (Director) $0 $0 $0
Linda Siegel (Director) $0 $0 $0
Ted Marconi (Secretary) $0 $0 $0
Jim Mcchesney (Vice President) $0 $0 $0
Griffin Bloodhart (Treasurer) $0 $0 $0
Bud Hamilton (Director) $0 $0 $0
John Fryer (President) $0 $0 $0
Julie Cassady (Director) $0 $0 $0
Jean Nels (Exec Dir/sec) $0 $0 $0
+ View more people

Document Links

990
Filed on Oct. 26, 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 990-EZ
Revenue
$162,781
Expenses
$65,747
Net Income
$97,034
Net Assets
$390,923
Notable Sources of Revenue Percent of Total Revenue
Contributions $84,150
51.7%
Program Services $12,585
7.7%
Investment Income $4,955
3.0%
Net Fundraising $4,696
2.9%
Sales of Assets $33,175
20.4%
Net Inventory Sales $17,837
11.0%
Other Revenue $5,383
3.3%
Assets/Debt
Total Assets $391,295
Total Liabilities $372
Net Assets $390,923
Compensation
Key Employees and Officers Compensation Other
Geoff Harkness (Director) $0 $0
Jean Nels (Exec Dir/sec) $0 $0
Joe Wirth (Director) $0 $0
Linda Siegel (Director) $0 $0
Ted Marconi (Secretary) $0 $0
Jim Mcchesney (President) $0 $0
Griffin Bloodhart (Treasurer) $0 $0
Bud Hamilton (Director) $0 $0
John Fryer (Vice President) $0 $0
Linda Mcchesney (Docent Schedule) $0 $0
Julie Cassady (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on April 23, 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
$146,019
Expenses
$71,062
Net Income
$74,957
Net Assets
$334,119
Notable Sources of Revenue Percent of Total Revenue
Contributions $95,886
65.7%
Program Services $16,731
11.5%
Investment Income $3,120
2.1%
Net Fundraising $6,968
4.8%
Sales of Assets $0
Net Inventory Sales $20,948
14.3%
Other Revenue $2,366
1.6%
Assets/Debt
Total Assets $334,414
Total Liabilities $295
Net Assets $334,119
Compensation
Key Employees and Officers Compensation Other
Geoff Harkness (Director) $0 $0
Jean Nels (Exec Dir/sec) $0 $0
Joe Wirth (Director) $0 $0
Linda Siegel (Director) $0 $0
Ted Marconi (Secretary) $0 $0
Jim Mcchesney (President) $0 $0
Griffin Bloodhart (Treasurer) $0 $0
Bud Hamilton (Director) $0 $0
John Fryer (Vice President) $0 $0
Linda Mcchesney (Docent Schedule) $0 $0
Julie Cassady (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Aug. 21, 2018

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

View Filing
XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$112,596
Expenses
$70,758
Net Income
$41,838
Net Assets
$242,466
Notable Sources of Revenue Percent of Total Revenue
Contributions $67,870
60.3%
Program Services $14,784
13.1%
Investment Income $3,019
2.7%
Net Fundraising $3,946
3.5%
Sales of Assets $0
Net Inventory Sales $17,813
15.8%
Other Revenue $5,164
4.6%
Assets/Debt
Total Assets $243,081
Total Liabilities $615
Net Assets $242,466
Compensation
Key Employees and Officers Compensation Other
Kevin Lahey (Director) $0 $0
Jean Nels (Exec Dir/sec) $0 $0
Joe Wirth (Director) $0 $0
Linda Siegel (Director) $0 $0
Judy Barnett (Secretary) $0 $0
Jim Mcchesney (President) $0 $0
Griffin Bloodhart (Treasurer) $0 $0
Bud Hamilton (Director) $0 $0
John Fryer (Vice President) $0 $0
Linda Mcchesney (Docent Schedule) $0 $0
Ned Boss (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 4, 2017

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$127,933
Expenses
$75,350
Net Income
$52,583
Net Assets
$190,078
Notable Sources of Revenue Percent of Total Revenue
Contributions $75,254
58.8%
Program Services $17,453
13.6%
Investment Income $2,347
1.8%
Net Fundraising $7,932
6.2%
Sales of Assets $0
Net Inventory Sales $18,700
14.6%
Other Revenue $6,247
4.9%
Assets/Debt
Total Assets $190,367
Total Liabilities $289
Net Assets $190,078
Compensation
Key Employees and Officers Compensation Other
Kevin Lahey (Director) $0 $0
Jean Nels (Exec Dir/sec) $0 $0
Joe Wirth (Director) $0 $0
Linda Siegel (Director) $0 $0
Judy Barnett (Secretary) $0 $0
Jim Mcchesney (President) $0 $0
Griffin Bloodhart (Treasurer) $0 $0
Bud Hamilton (Director) $0 $0
John Fryer (Vice President) $0 $0
Linda Mcchesney (Docent Schedule) $0 $0
Ned Boss (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 12, 2016

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$92,846
Expenses
$65,277
Net Income
$27,569
Net Assets
$139,319
Notable Sources of Revenue Percent of Total Revenue
Contributions $46,337
49.9%
Program Services $12,175
13.1%
Investment Income $1,771
1.9%
Net Fundraising $8,697
9.4%
Sales of Assets $0
Net Inventory Sales $17,432
18.8%
Other Revenue $6,434
6.9%
Assets/Debt
Total Assets $139,571
Total Liabilities $252
Net Assets $139,319

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
$70,217
Expenses
$77,777
Net Income
-$7,560
Net Assets
$106,765
Notable Sources of Revenue Percent of Total Revenue
Contributions $25,967
37.0%
Program Services $14,426
20.5%
Investment Income $2,517
3.6%
Net Fundraising $8,622
12.3%
Sales of Assets $0
Net Inventory Sales $13,789
19.6%
Other Revenue $4,896
7.0%
Assets/Debt
Total Assets $107,002
Total Liabilities $237
Net Assets $106,765

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
$70,250
Expenses
$36,921
Net Income
$33,329
Net Assets
$103,127
Notable Sources of Revenue Percent of Total Revenue
Contributions $37,876
53.9%
Program Services $8,533
12.1%
Investment Income $1,306
1.9%
Net Fundraising $9,391
13.4%
Sales of Assets $0
Net Inventory Sales $12,301
17.5%
Other Revenue $843
1.2%
Assets/Debt
Total Assets $103,319
Total Liabilities $192
Net Assets $103,127

Document Links

990-EZ

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

PDF

Fiscal Year Ending Dec.
2011

Gross receipts
Less than $50,000

Postcard filings do not ask for a specific revenue amount and provide no additional financial details.

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

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-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

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

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 financial information from tax returns processed by the IRS since the 2012 calendar years, as well as data extracted from digital filings. IRS summary data also includes limited 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 for 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?

Most organizations that have been recognized as tax exempt by the IRS have to file the 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 the 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," which does not contain financial details. Churches are not required to file Form 990.

Nonprofit Explorer has organizations that are claiming tax exemption in any of the 27 subsections of the 501(c) section of the tax code. Taxable trusts and private foundations that are required to file a form 990PF are also included.

Types of Nonprofits

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

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

  • Raw filing data. Includes Employer Identification Numbers 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.
  • 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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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