Elizabeth Edwards Spalding, The First Cold Warrior: Harry Truman, Containment, and the Remaking of Liberal Internationalism, University Press of Kentucky, 2006, p. 15, ISBN 978-0-8131-2392-9.
«Having been reelected in 1940 without FDR's endorsement (and having supported favorite-son candidate Missouri Senator Bennett Champ Clark for the Democratic presidential nomination), Truman returned to the Senate with a reputation as an anti-Roosevelt Democrat.»