William McKendree Springer (May 30, 1836 – December 4, 1903) was a United States Representative from Illinois. He was born near New Lebanon, Sullivan County, Indiana, May 30, 1836; moved to Jacksonville, Illinois, with his parents in 1848; attended the public schools in New Lebanon and Jacksonville and the Illinois College at Jacksonville where he was a member of Phi Alpha Literary Society; graduated from Indiana University in 1858; studied law; was admitted to the bar in 1859 and practiced in Lincoln, Illinois and Springfield, Illinois; was secretary of the State constitutional convention in 1862 at the young age of 26 and briefly served as assistant secretary of the state’s senate; traveled in Europe 1868-1871; was member of the Illinois House of Representatives in 1871 and 1872; elected as a Democrat to the Forty-fourth and to the nine succeeding Congresses (March 4, 1875 – March 3, 1895). During his service in Congress he was involved in the investigation of election frauds during the Hayes-Tilden campaign. He was chairman, Committee on Expenditures in the Department of State (Forty-fourth and Forty-fifth Congresses), Committee on Elections (Forty-sixth Congress), Committee on Expenditures in the Department of Justice (Forty-eighth Congress), Committee on Claims (Forty-ninth Congress), Committee on Territories (Fiftieth Congress), Committee on Ways and Means (Fifty-second Congress), Committee on Banking and Currency (Fifty-third Congress). While on the Committee on Territories Springer framed the bills that organized Oklahoma Territory and also created a federal judicial system for the Indian Territory. Springer created an Amendment as a "rider" to the Indian Appropriations Act for 1890. The Springer Amendment began the process of placing the Unassigned Lands of Indian Territory within the federal public domain and open to homesteaders. He was an unsuccessful candidate for reelection in 1894 to the Fifty-fourth Congress. He again resumed the practice of law in Washington, D.C., in 1895. He was appointed by President Grover Cleveland as a United States judge for the northern district of Indian Territory and chief justice of the United States Court of Appeals of Indian Territory.
In 1900 Springer left his judicial post to establish law offices in both Chicago and Washington, D.C. He also worked for the National Livestock Association as their lobbyist, where he became exposed to the Kiowa reserve grasslands.
Though the Springer Amendment helped to open up Indian lands to homesteaders, in 1901 William Springer was hired by two Kiowa Indians (later to include numerous other Indians from the KCA tribes) from the Kiowa, Comanche, Apache Reservation to represent them in what became the court case of Lone Wolf v. Hitchcock, 187 U.S. 553 (1903). Springer had aided in the writing of a memorial to the President protesting the 1900 Act that resulted from the Jerome Agreement between the Indians from the Kiowa, Comanche, and Apache Reservation and the members of the Jerome Commission. In the Jerome Agreement the tribes of the KCA Reservation ceded most of their lands to the United States who would then open it up for allotment to white settlers. Lone Wolf asserted and Springer argued on his behalf in court that 1.) The Kiowa, Comanche, and Apache Indians were fraudulently induced to sign the Jerome Agreement and those that did sign did not fully understand its provisions vastly because, like Lone Wolf, most of the Indians did not speak English and relied on interpreters. 2.) The Jerome Agreement was not signed by three-fourths of the adult male members of the tribes as required by the Medicine Lodge Treaty. Lone Wolf alleged that the total number of Indian males exceeded the number claimed by the Indian Agent and that the census of 1900 showed there were 639 adult male members of the KCA tribes on the reservation. Thus the Jerome Agreement was twenty-three signatures short of the required amount. 3.) The KCA’s had protested the agreement from the beginning. 4.) The version that was ratified by Congress had been significantly altered and amended and the changes made had not been submitted to the KCA for their approval. Springer argued for Lone Wolf that Congress should not be able to unilaterally alter the provisions of the agreement without the Indians’ consent and thus the Act should be rejected.