Abner C. Harding
"(February 10, 1807 -- July 19, 1874) Abner Clark Harding was a lawyer, soldier, American politician and engaged in banking and railroad building. Harding was born in East Hampton, Middlesex County, Connecticut, and moved to Monmouth, Warren County, Illinois in 1838. He was a member of the State Constitutional Convention in 1848 and was a member of the State house of representatives from 1848-1850. He enlisted as a private in the Union Army in the 83rd Regiment, volunteered on the Illinois Volunteer Infantry, was commissioned colonel (1863) and was promoted to brigadier general. Harding was elected as a Republican to the 39th and 40th Congresses from March 4, 1865 to March 3, 1869 where he served as a chairman on the Committee on the militia (39th Congress). He was not reelected. [Source: 'Biographical Directory of the United States Congress 1774 - Present', available at https://bioguideretro.congress.gov/Home/MemberDetails?memIndex=H000188]"
Illinois Delegation - United States Fourteenth Amendment & The Civil Rights Act of 1866
Illinois Delegation - United States Fifteenth Amendment