| Year | Treaty |
|---|---|
| 1817 | Treaty with the Ponca, 1817 |
| 1825 | Treaty with the Ponca, 1825 |
| 1858 | Treaty with the Ponca, 1858 |
| 1865 | Treaty with the Ponca, 1865 |
| 1880 | Agreement with the Ponca, 1880 |
Treaties
| Year | Treaty |
|---|---|
| 1817 | Treaty with the Ponca, 1817 |
| 1825 | Treaty with the Ponca, 1825 |
| 1858 | Treaty with the Ponca, 1858 |
| 1865 | Treaty with the Ponca, 1865 |
| 1880 | Agreement with the Ponca, 1880 |