Edward Bates was a man of firsts, he was the first attorney general of Missouri after it was admitted as a state and was the first cabinet member to be appointed from west of the Mississippi River. Bates served as United States Attorney General under President Abraham Lincoln from 1861 to 1864. Image: National Archives Identifier 528314.
Edwards Pierrepont (March 4, 1817 – March 6, 1892) was an American statesman, jurist and lawyer. Having graduated from Yale in 1837, Pierrepont studied law and was admitted to the bar in 1840. During the American Civil War, Pierrepont was a loyal Democrat who supported President Abraham Lincoln. Pierrepont supported President Andrew Johnson's conservative Reconstruction efforts having opposed the Radical Republicans.
Philander Chase Knox (May 6, 1853 –October 12, 1921) was an American lawyer, bank director and politician who served as United States Attorney General (1901–1904), a Senator from Pennsylvania (1904–1909, 1917–1921) and Secretary of State (1909–1913). He served in the Cabinet under three presidents.