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Winnetka Historical Society

  • Winnetka, IL
  • Tax-exempt since Nov. 1955
  • EIN: 36-6110212

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
$290k (2023)

Expenses
$348k (2023)

Total Assets
$1.23M (2023)

Total Liabilities
$6.2k (2023)

Source: Form 990 tax filings from 2011 to 2023

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.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$289,794
Expenses
$347,952
Net Income
-$58,158
Net Assets
$1,221,927
Notable Sources of Revenue Percent of Total Revenue
Contributions $270,820
93.5%
Program Services $17,962
6.2%
Investment Income $733
0.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $279
0.1%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $153,270
44.0%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,228,128
Total Liabilities $6,201
Net Assets $1,221,927
Compensation
Key Employees and Officers Compensation Related Other
Holly Marihugh (President) $0 $0 $0
Carrie Hoza (Vice President) $0 $0 $0
Joan Evanich (Secretary) $0 $0 $0
Helen Weaver (Treasurer) $0 $0 $0
Jim Carroll (Director) $0 $0 $0
Susan Sullivan (Director) $0 $0 $0
Paige Dooley (Director) $0 $0 $0
James Herrmann (Director) $0 $0 $0
Tom Flemma (Director) $0 $0 $0
Tim Ring (Director) $0 $0 $0
Peter Tyor (Director) $0 $0 $0
Karen Vorwald (Director) $0 $0 $0
Kristen Kleinops (Director) $0 $0 $0
Mary Westerman (Director) $0 $0 $0
Bob Marren (Director) $0 $0 $0
Mary Trieschmann (Executive Director) $0 $61,501 $0
Jennifer Miller (Admin Assistant) $0 $23,254 $0
Meagan Mcchesney (Curator) $0 $55,764 $0
Maris Rosenfeld (Program Coordinator) $0 $5,171 $0
Karis Baker (Admin Assistant) $0 $7,580 $0
+ View more people

Document Links

990
Filed on Feb. 23, 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
$335,453
Expenses
$342,150
Net Income
-$6,697
Net Assets
$1,281,288
Notable Sources of Revenue Percent of Total Revenue
Contributions $311,686
92.9%
Program Services $23,388
7.0%
Investment Income $128
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $251
0.1%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $139,741
40.8%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,285,050
Total Liabilities $3,762
Net Assets $1,281,288
Compensation
Key Employees and Officers Compensation Related Other
Mary Trieschmann (Executive Director) $63,345 $0 $0
Meagan Mcchesney (Curator) $42,636 $0 $0
Jennifer Miller (Admin Assistant) $20,610 $0 $0
Jennifer Duvall (Admin Assistant) $7,700 $0 $0
Maris Rosenfeld (Program Coordinator) $5,450 $0 $0
Holly Marihugh (President) $0 $0 $0
Tom Flemma (Vice President) $0 $0 $0
Joan Evanich (Secretary) $0 $0 $0
Helen Weaver (Treasurer) $0 $0 $0
Peter Butler (Director) $0 $0 $0
Susan Sullivan (Director) $0 $0 $0
Paige Dooley (Director) $0 $0 $0
James Herrmann (Director) $0 $0 $0
Carrie Hoza (Director) $0 $0 $0
Tim Ring (Director) $0 $0 $0
Peter Tyor (Director) $0 $0 $0
Karen Vorwald (Director) $0 $0 $0
Helen Weaver (Director) $0 $0 $0
Mary Westerman (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on March 11, 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
$313,273
Expenses
$276,101
Net Income
$37,172
Net Assets
$1,287,048
Notable Sources of Revenue Percent of Total Revenue
Contributions $281,904
90.0%
Program Services $20,600
6.6%
Investment Income $8
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $2,161
0.7%
Other Revenue $8,600
2.7%
Notable Expenses Percent of Total Expenses
Executive Compensation $110,648
40.1%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,289,976
Total Liabilities $2,928
Net Assets $1,287,048
Compensation
Key Employees and Officers Compensation Related Other
Mary Trieschmann (Executive Director) $55,433 $0 $0
Meagan Mcchesney (Admin Assistant) $36,349 $0 $0
Jennifer Miller (Admin Assistant) $18,026 $0 $0
Peter Butler (President) $0 $0 $0
Joan Evanich (Vice President) $0 $0 $0
Holly Marihugh (Secretary) $0 $0 $0
Christine Murdoch (Treasurer) $0 $0 $0
Carrie Hoza (Director) $0 $0 $0
Paige Dooley (Director) $0 $0 $0
Tom Flemma (Director) $0 $0 $0
James Herrmann (Director) $0 $0 $0
Tim Ring (Director) $0 $0 $0
Peter Tyor (Director) $0 $0 $0
Helen Weaver (Director) $0 $0 $0
Mary Westerman (Direector) $0 $0 $0
Susan Sullivan (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on April 28, 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
$172,043
Expenses
$192,173
Net Income
-$20,130
Net Assets
$1,250,001
Notable Sources of Revenue Percent of Total Revenue
Contributions $158,477
92.1%
Program Services $12,300
7.1%
Investment Income $630
0.4%
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 $82,495
42.9%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,279,844
Total Liabilities $29,843
Net Assets $1,250,001
Compensation
Key Employees and Officers Compensation Related Other
Mary Trieschmann (Executive Director) $24,033 $18,950 $0
Peter Butler (President) $0 $0 $0
Joan Evanich (Vice President) $0 $0 $0
Holly Marihugh (Secretary) $0 $0 $0
Christine Murdoch (Treasurer) $0 $0 $0
Anne Bahan (Director) $0 $0 $0
Paige Dooley (Director) $0 $0 $0
Tom Flemma (Director) $0 $0 $0
James Herrmann (Director) $0 $0 $0
Dina Spoerl (Director) $0 $0 $0
Ann Thompson (Director) $0 $0 $0
Peter Tyor (Director) $0 $0 $0
Helen Weaver (Director) $0 $0 $0
Mary Westerman (Direector) $0 $0 $0
Rachel Ramirez (Curator) $0 $3,296 $0
Jennifer Miller (Admin Assistant) $0 $15,678 $0
Meagan Mcchesney (Admin Assistant) $0 $20,537 $0
+ View more people

Document Links

990
Filed on May 8, 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
$209,771
Expenses
$238,455
Net Income
-$28,684
Net Assets
$1,269,988
Notable Sources of Revenue Percent of Total Revenue
Contributions $134,207
64.0%
Program Services $21,433
10.2%
Investment Income $699
0.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $41,033
19.6%
Sales of Assets $0
Net Inventory Sales $12,399
5.9%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $40,759
17.1%
Professional Fundraising Fees $0
Other Salaries and Wages $36,865
15.5%
Assets/Debt
Total Assets $1,270,663
Total Liabilities $675
Net Assets $1,269,988
Compensation
Key Employees and Officers Compensation Related Other
Mary Trieschmann (Executive Director) $38,420 $0 $0
Rachel Ramirez (Curator) $28,538 $0 $0
Elizabeth Mulhern (Admin Assistant) $9,288 $0 $0
Jennifer Miller (Admin Assistant) $3,037 $0 $0
Peter Butler (President) $0 $0 $0
Joan Evanich (Vice President) $0 $0 $0
Holly Marihugh (Secretary) $0 $0 $0
Christine Murdoch (Treasurer) $0 $0 $0
Anne Bahan (Director) $0 $0 $0
Amy Capocchi (Director) $0 $0 $0
Joan Conslik (Director) $0 $0 $0
Layla Danley (Director) $0 $0 $0
Paige Dooley (Director) $0 $0 $0
Tom Flemma (Director) $0 $0 $0
Phil Hoza (Director) $0 $0 $0
Patty Sanfilippo (Director) $0 $0 $0
Charlie Shabica (Director) $0 $0 $0
Ann Smith (Director) $0 $0 $0
Dina Spoerl (Director) $0 $0 $0
Peter Tyor (Director) $0 $0 $0
Helen Weaver (Director) $0 $0 $0
Mary Bulgarella (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on April 16, 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
$196,072
Expenses
$201,540
Net Income
-$5,468
Net Assets
$1,299,347
Notable Sources of Revenue Percent of Total Revenue
Contributions $133,688
68.2%
Program Services $22,423
11.4%
Investment Income $407
0.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $39,161
20.0%
Sales of Assets $0
Net Inventory Sales $393
0.2%
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 $1,299,843
Total Liabilities $496
Net Assets $1,299,347

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$158,599
Expenses
$200,085
Net Income
-$41,486
Net Assets
$1,304,815
Notable Sources of Revenue Percent of Total Revenue
Contributions $90,260
56.9%
Program Services $26,504
16.7%
Investment Income $91
0.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $43,485
27.4%
Sales of Assets $0
Net Inventory Sales -$1,741
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $80,553
40.3%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,305,192
Total Liabilities $377
Net Assets $1,304,815

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$179,251
Expenses
$210,336
Net Income
-$31,085
Net Assets
$1,360,073
Notable Sources of Revenue Percent of Total Revenue
Contributions $104,265
58.2%
Program Services $27,645
15.4%
Investment Income $88
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $46,806
26.1%
Sales of Assets $0
Net Inventory Sales $447
0.2%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $82,486
39.2%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,362,188
Total Liabilities $2,115
Net Assets $1,360,073

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$151,285
Expenses
$213,867
Net Income
-$62,582
Net Assets
$1,391,158
Notable Sources of Revenue Percent of Total Revenue
Contributions $91,241
60.3%
Program Services $28,521
18.9%
Investment Income $72
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $30,930
20.4%
Sales of Assets $0
Net Inventory Sales $521
0.3%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $77,747
36.4%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,393,502
Total Liabilities $2,344
Net Assets $1,391,158

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$154,572
Expenses
$204,243
Net Income
-$49,671
Net Assets
$1,453,740
Notable Sources of Revenue Percent of Total Revenue
Contributions $85,400
55.2%
Program Services $27,993
18.1%
Investment Income $72
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $41,127
26.6%
Sales of Assets $0
Net Inventory Sales -$20
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $78,886
38.6%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,456,844
Total Liabilities $3,104
Net Assets $1,453,740

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$149,199
Expenses
$200,833
Net Income
-$51,634
Net Assets
$1,503,411
Notable Sources of Revenue Percent of Total Revenue
Contributions $70,669
47.4%
Program Services $40,455
27.1%
Investment Income $72
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $37,843
25.4%
Sales of Assets $0
Net Inventory Sales $160
0.1%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $75,923
37.8%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,506,269
Total Liabilities $2,858
Net Assets $1,503,411

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$150,755
Expenses
$190,583
Net Income
-$39,828
Net Assets
$1,555,045
Notable Sources of Revenue Percent of Total Revenue
Contributions $76,270
50.6%
Program Services $28,613
19.0%
Investment Income $74
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $45,499
30.2%
Sales of Assets $0
Net Inventory Sales $299
0.2%
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $41,022
21.5%
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,556,817
Total Liabilities $1,772
Net Assets $1,555,045

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$150,930
Expenses
$203,473
Net Income
-$52,543
Net Assets
$1,594,873
Notable Sources of Revenue Percent of Total Revenue
Contributions $92,890
61.5%
Program Services $26,236
17.4%
Investment Income $95
0.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $31,915
21.1%
Sales of Assets $0
Net Inventory Sales -$206
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $37,221
18.3%
Professional Fundraising Fees $0
Other Salaries and Wages $17,575
8.6%
Assets/Debt
Total Assets $1,596,910
Total Liabilities $2,037
Net Assets $1,594,873

Document Links

990

Primary 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

Primary 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

Primary 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

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

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

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

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

PDF

About 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 »

Byline

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