Isaac N. Arnold | |
|---|---|
 Arnold in 1884 | |
| 6th Auditor of the United States Department of the Treasury | |
| In office 1865–1866 | |
| Appointed by | Abraham Lincoln |
| Member of the United States House of Representatives from Illinois | |
| In office March 4, 1863 – March 3, 1865 | |
| Preceded by | Elihu B. Washburne |
| Succeeded by | John Wentworth |
| Constituency | 1st |
| In office March 4, 1861 – March 3, 1863 | |
| Preceded by | John F. Farnsworth |
| Succeeded by | John F. Farnsworth |
| Constituency | 2nd |
| Member of the Illinois House of Representatives | |
| In office 1857–1858 | |
| In office 1842–1846 | |
| 1st Chicago City Clerk | |
| In office 1837–1838 | |
| Preceded by | James Curtiss (town clerk) |
| Succeeded by | George Davis |
| Personal details | |
| Born | November 30, 1815 Hartwick, New York, US |
| Died | April 24, 1884 (aged 68) Chicago, Illinois, US |
| Resting place | Graceland Cemetery |
| Political party | Republican (after 1860) Free Soil Party (~1848–1860) Democratic Party (before 1848) |
Isaac Newton Arnold (November 30, 1815 – April 24, 1884) was an American attorney, politician, and biographer who made his career in Chicago. He served two terms in the United States House of Representatives (1860–1864) and in 1864 introduced the first resolution in Congress proposing a constitutional amendment to abolish slavery in the United States. After returning to Chicago in 1866, he practiced law and wrote biographies of Abraham Lincoln and Benedict Arnold.