Ralph Henry Cameron was an American businessman, prospector and politician who served as both Arizona Territory's Delegate to Congress and as an Arizona United States Senator. As a Territorial delegate, he saw Arizona achieve statehood in 1912. Cameron's greatest achievement in the US Senate was the authorization for the Coolidge Dam.

Henry Fountain Ashurst was an American Democratic politician and one of the first two senators from Arizona. Largely self-educated, he served as a district attorney and member of the Arizona Territorial legislature before fulfilling his childhood ambition of joining the United States Senate. During his time in the Senate, Ashurst was chairman of the Committee on Indian Affairs and the Judiciary Committee.