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Governance Register
US nonprofit · EIN 742427144 · Denver, COiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 742427144) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe time served.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.State registers Colorado Secretary of State (17 October 2026).Licence US Federal Government public domain.How we handle data

Denver Earth Resources Library's network

6 people5 organisationsi6 people and 5 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (6). Violet dotted lines (5) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

6 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 6 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Dawn LimaCompany secretary2022
4 yrs
Joe DumesnilVice President2022
4 yrs
Michael MurphyTreasurer2022
4 yrs
Mindy StoneDirector2022
4 yrs
Robert SterlingDirector2024
2 yrs
Trisha CurtisDirector2023
3 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

2 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Amanda KohnExecutive Directorsince 2019
Tom Van ArsdaleExecutive Director2018

Pay and hours

year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Amanda KohnExecutive Director30$74k
Joe DumesnilVice President0.25$0
Dawn LimaSecretary0.25$0
Michael MurphyTreasurer0.25$0
Trisha CurtisDirector0.25$0
Robert SterlingDirector0.25$0
Mindy StoneDirector0.25$0

Colorado roster

10 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20213021545). Titles are as filed; some entries are registered agents or custodians of records rather than board members. Source: data.colorado.gov, public domain.
NameTitle as filed
Kevin LinerTreasurer
Sam BeckBoard Member
Jessica DaveyPresident
Mindy StoneBoard Member
Kevin SmithVice President
Joe DumesnilBoard Member
Jessica DaveyPresident, Board Chair
Amanda KohnExecutive Director
Ben BurkeSecretary
Amanda Kohn

About

Legal name
Denver Earth Resources Library
EIN
742427144
Address
730 17th St, Denver, CO, 80202-3580
State
Colorado
Mission
Denver Earth Resources Library fosters interest in Earth Science by providing a space for the community to explore geological data from the Greater Rocky Mountain region. We serve as an educational and social hub through classes and events. (as filed on the Form 990)
Activity (NTEE)
B73Z Education
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Education
Size band
6 (IRS master file code)
Formed
1986
Principal officer
Amanda Kohn (as named on the Form 990)
IRS ruling date
1 January 1987
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥4years on the filingsDawn Lima
≥4years on the filingsJoe Dumesnil
≥4years on the filingsMichael Murphy
≥4years on the filingsMindy Stone

Latest return

year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.
Total assets
$1.9m
Total liabilities
$8k
Net assets or fund balances
$1.9m
Contributions and grants received
$621k
Program service revenue
$12k
Employees
1
Volunteers
10

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$673k$289k$384k

As filed on the IRS Form 990. US dollars.

State registration

1 entityiBusiness-entity registers published by US states. These records are matched to this organisation by name and state, not by EIN, and are labelled as likely matches. Street addresses are not shown.
Denver Earth Resources Library likely matchiMatched by exact name and state (and ZIP where shown). State registers do not publish EINs, so this is not a confirmed match. Source: Colorado Secretary of State (CDOS), business entities (data.colorado.gov 4ykn-tg5h). Licence: public domain. Data last fetched 18 October 2026.
State
Colorado
Entity type
nonprofit corporation
Status
Noncompliant
Formed
11 July 1986
Registered agent
Amanda Lynn Kohn (city and state not held)

This register does not publish officers or directors.