- Revenue 2025
- $390,840
- Expenses 2025
- $790,348
Program services were 90.9% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.
As filed
- Subsection
- 03
- NTEE code
- A80
- Classification
- 2000
- Street
- 900 GOVERNORS DR
These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).
Mission and programs · 2025
Mission
PRESERVE SOUTH DAKOTA HISTORY
-
TO ENCOURAGE AND FOSTER THE PRESERVATION, STUDY, RESEARCH, AND DISSEMINATION OF INFORMATION OF THE PREHISTORIC AND HISTORIC HERITAGE AND ASSIST THE PURPOSE OF THE SOUTH DAKOTA HISTORICAL SOCIETY.
Expenses $718,062
As filed on the 2025 return.
Officers and directors · 2025
As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.
-
Karly WinterKARLY WINTER
SECRETARY
- Total calculated
- $0
- Hours/week
- 1
-
Laura ArmstrongLAURA ARMSTRONG
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Dew Bad Warrior-GanjeDEW BAD WARRIOR-GANJE
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Eric JenningsERIC JENNINGS
VICE PRESIDENT
- Total calculated
- $0
- Hours/week
- 1
-
Ben JonesBEN JONES
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Pat MillerPAT MILLER
DELEGATE CHAIR
- Total calculated
- $0
- Hours/week
- 1
-
Val SimpsonVAL SIMPSON
PRESIDENT/VP
- Total calculated
- $0
- Hours/week
- 1
-
Chuck SchroyerCHUCK SCHROYER
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Julie BreuJULIE BREU
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Casey DeflingerCASEY DEFLINGER
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Tony VenhuizenTONY VENHUIZEN
PAST PRESIDENT
- Total calculated
- $0
- Hours/week
- 1
-
Bob FoleyBOB FOLEY
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Marcus MahlenMARCUS MAHLEN
DELEGATE CHAIR
- Total calculated
- $0
- Hours/week
- 1
-
Bill PetersonBILL PETERSON
TREASURER
- Total calculated
- $0
- Hours/week
- 1
-
Nathan SandersonNATHAN SANDERSON
DELEGATE CHAIR
- Total calculated
- $0
- Hours/week
- 1
-
Catherine ForschCATHERINE FORSCH
CEO
- Total calculated
- $0
- Hours/week
- 40
Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.
Filings
-
2025
- Revenue
- $390,840
- Expenses
- $790,348
- Contributions
- $395,338
- Grants paid
- $0
-
2023
- Revenue
- $966,672
- Expenses
- $760,103
- Contributions
- $889,210
- Grants paid
- $0
-
2022
- Revenue
- $570,472
- Expenses
- $826,505
- Contributions
- $496,070
- Grants paid
- $0
The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.
Other returns filed
-
2021 · 990
- Revenue
- $765,039
- Expenses
- $865,792
- Assets (EOY)
- $2,393,071
-
2020 · 990
- Revenue
- $836,126
- Expenses
- $737,988
- Assets (EOY)
- $2,402,661
-
2019 · 990
- Revenue
- $648,113
- Expenses
- $922,789
- Assets (EOY)
- $2,232,906
-
2018 · 990
- Revenue
- $762,141
- Expenses
- $810,064
- Assets (EOY)
- $2,300,132
-
2017 · 990
- Revenue
- $695,982
- Expenses
- $939,557
- Assets (EOY)
- $2,480,088
-
2016 · 990
- Revenue
- $881,186
- Expenses
- $759,172
- Assets (EOY)
- $2,618,443
-
2015 · 990
- Revenue
- $3,404,314
- Expenses
- $2,060,683
- Assets (EOY)
- $2,472,176
-
2014 · 990
- Revenue
- $602,261
- Expenses
- $798,143
- Assets (EOY)
- $1,183,981
-
2013 · 990
- Revenue
- $587,638
- Expenses
- $516,267
- Assets (EOY)
- $1,323,710
Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.
Grants made
No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.
Grants received
-
2023 Community welfare and betterment
-
2022 Community welfare and betterment
-
2024 Community welfare and betterment
-
2023 GENERAL SUPPORT
-
$10,000
2023 SEED FUNDING FOR A250 COMMISSION
-
$6,000
2023 GIG Fund
-
2024 For grant recipient's exempt purposes
Other IRS files
Auto-Revocation List
Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.
Publication 78
Listed as of 13 October 2026, under deductibility PC.
These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.
What this page reflects
The registration facts above come from the IRS Business Master File published 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.