Sioux City Lewis & Clark Interpretive Center
Donations deductibleSioux City Lewis & Clark Interpretive Center's network
10 people6 organisationsi10 people and 6 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (10). Violet dotted lines (6) 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
10 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 10 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Andrea Johnson | President | 2018 | 8 yrs |
| Bruce Miller | Board Member | 2018 | 8 yrs |
| Carolyn Ellwanger | Treasurer | 2018 | 8 yrs |
| Dale Tigges | Board Member | 2022 | 4 yrs |
| Larry Obermeyer | Company secretary | 2018 | 8 yrs |
| Linda Linduski | Board Member | 2018 | 8 yrs |
| Mike Walsh | Board Member | 2018 | 8 yrs |
| Renee Billings | Board Member | 2025 | 1 yr |
| REX Towns | Vice President | 2018 | 8 yrs |
| Robert Desmidt | Board Member | 2024 | 2 yrs |
Under 5 years5 to 6 years6 years or more
Officers and senior leadership
6 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.| Name | Title as filed | On the filings |
|---|---|---|
| Marcia Poole | Executive Director | since 2018 |
| Michael McCormick | Facilities Manager | since 2018 |
| Sarah Olson | Assistant Director | since 2022 |
| Teresa Jackson | Assistant Director | 2024 |
| Theresa Jackson | Assistant Director | 2025 |
| Tracy Bennett | Executive Director | since 2019 |
Pay and hours
year to 30 June 2025iFrom 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.| Name | Title as filed | Hours a week | Pay from the organisation | Related organisations | Other |
|---|---|---|---|---|---|
| Tracy Bennett | Executive Director | 40 | $82k | $2k | |
| Theresa Jackson | Assistant Director | 40 | $60k | $2k | |
| Rex Towns | Vice President | 2 | $0 | ||
| Andrea Johnson | President | 2 | $0 | ||
| Bruce Miller | Board Member | 2 | $0 | ||
| Larry Obermeyer | Secretary | 2 | $0 | ||
| Carolyn Ellwanger | Treasurer | 2 | $0 | ||
| Mike Walsh | Board Member | 2 | $0 | ||
| Linda Linduski | Board Member | 2 | $0 | ||
| Renee Billings | Board Member | 2 | $0 | ||
| Dale Tigges | Board Member | 2 | $0 | ||
| Robert Desmidt | Board Member | 2 | $0 |
About
- Legal name
- Sioux City Lewis & Clark Interpretive Center
- EIN
- 020572695
- Address
- 900 Larsen Park Rd, Sioux City, IA, 51103-4916
- State
- Iowa
- Mission
- To provide educational benefits related to the history and culture of the region. (as filed on the Form 990)
- Activity (NTEE)
- A50 Arts, culture and humanities
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Arts, Culture & Humanities
- Size band
- 6 (IRS master file code)
- Formed
- 2002
- Principal officer
- Carolyn Ellwanger (as named on the Form 990)
- IRS ruling date
- 1 March 2003
- Status
- Code 01 (unconditional exemption)
- Form 990 filings on record
- 8, latest 2025
- IRS Publication 78
- PC (contributions deductible)
Most connected
Longest observed on the filings
≥8years on the filingsAndrea Johnson
≥8years on the filingsBruce Miller
≥8years on the filingsCarolyn Ellwanger
≥8years on the filingsLarry Obermeyer
Latest return
year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.- Total assets
- $4.8m
- Total liabilities
- $46k
- Net assets or fund balances
- $4.8m
- Contributions and grants received
- $814k
- Program service revenue
- $0
- Employees
- 6
- Volunteers
- 37
Filed finances
1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.| Tax year | Total revenue | Total expenses | Surplus or deficit |
|---|---|---|---|
| 2023 | $910k | $875k | $36k |
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.Sioux City Lewis & Clark Interpretive Center 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: Iowa Secretary of State, active business entities (data.iowa.gov ez5t-3qay). Licence: CC BY 4.0. Attribution: Iowa Secretary of State. Data last fetched 18 October 2026.
- State
- Iowa
- Entity type
- Revised Domestic Non-Profit
- Status
- Active
- Formed
- 11 January 2002
- Registered agent
- Mark Monson (city and state not held)