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Friends Group · National Park

Badlands Natural History Association

“Support education and interpretation at Badlands National Park.”

67 years on the ground, 70 cents of every dollar to the work.

Home groundInterior, SD
Founded1959
Tax status501(c)(3)
Led bySam Benne

Every way to help ↓

The work

What they do

Cooperating association for Badlands National Park. Operates bookstores and funds educational and interpretive programs.

Where the money went, FY2025

The work, and what it cost

Education and partnership with the National Park Service

$352K, 70% of spending

See schedule o under mission for a more detailed description.

Read it as they filed it
EDUCATION AND PARTNERSHIP WITH THE NATIONAL PARK SERVICE. SEE SCHEDULE O UNDER MISSION FOR A MORE DETAILED DESCRIPTION.

IRS Form 990 Part III, fiscal year 2025, signed under penalty of perjury.

Follow the dollar

70 cents of every dollar goes to the work

70¢
70¢ the work30¢ keeping the lights on0¢ raising the next dollar

Read it as a snapshot, not a scorecard. Splits move year to year with grants and campaigns, and healthy shops live all across this range.

$351,852 programs, $148,580 management, $0 fundraising. Form 990, FY2025.

The people

Who does the work

10paid staff
9volunteers last year
9board members
Sam BennePresidentVolunteer, 1 hrs a week, $0

Honesty note: leadership comes from each year’s federal filing, so it can run a year behind. If it’s out of date, tell us. Work at the Badlands Natural History Association? Claim this page.

Those 9 volunteers are people who decided this ground was theirs to defend. If the Badlands Natural History Association is fighting for your place too, the matchmaker will find your way in.

Find your way in

The filings

14 years of filings

Total revenue by fiscal year, as filed. Point at or tap the line for any year.

$1M$2M$1.6M FY2520112025
Total revenue by fiscal year
YearRevenue
2011$258,309
2012$317,791
2013$390,593
2014$325,440
2015$398,429
2016$504,664
2017$579,750
2018$591,100
2019$766,789
2020$837,200
2021$1,871,243
2022$1,802,760
2023$2,134,655
2025$1,646,104

From $258K in 2011 to $1.6M in FY25, across 14 public filings (none on record for 2024). 2023, at $2.1M, stands well above the other years on file.

Stand with the Badlands Natural History Association

The mission is theirs. The backing is yours.

Sources and methodFinancials, headcounts, and program text: IRS Form 990, FY2025 and 13 prior filings via ProPublica Nonprofit Explorer, EIN 46-0278822. Leadership and compensation: Form 990 Part VII and the return’s signature block, FY2025 filing. Org-reported figures are always labeled. Data verified as of 2026-09-23. Nothing on this page is pay-to-play.