20th-century American Presbyterian ministers

Reverend Carroll L. "Bud" Pickett (1933 – April 3, 2022) was a Presbyterian minister in Huntsville, Texas. In the 1960s and 1970s, Pickett served as pastor for three churches in Texas. In 1980 he began serving as a chaplain in the Huntsville, Texas, prison, where he spent most of the next 15 years working with prisoners facing imminent execution. After retiring from the Texas Department of Corrections, Pickett wrote and spoke against the death penalty. His 2002 book, Within These Walls: Memoirs of a Death House Chaplain, won several awards. The 2008 documentary At the Death House Door: No Man Should Die Alone chronicles his prison ministry.

Peter Marshall (May 27, 1902 – January 26, 1949) was a Scottish-American preacher, pastor of the New York Avenue Presbyterian Church in Washington, D.C., and was appointed as Chaplain of the United States Senate.
He is remembered popularly from the success of A Man Called Peter (1951), a biography written by his widow, Catherine Marshall, and the book's 1955 film adaptation, which was nominated for an Academy Award for its cinematography.