Encyclopedia Americana: Hubert H. Humphrey: Biographical article traces Humphrey's political career.
Hubert H. Humphrey Museum & Learning Center, Waverly, Minnesota: Centers on Hubert H. Humphrey's life and the effect he had in shaping the conscience, culture, and history of the nation.
Hubert Humphrey: Short biography includes portrait, and links to related subjects.
Humphrey, Hubert Horatio: Short biographical entry in The Columbia Encyclopedia, 6th ed.
Humphrey, Hubert Horatio, Jr. (1911-1978): Curriculum vitae. With portrait and bibliography. In the Biographical Dictionary of the United States Congress.
LBJ Library: Hubert Horatio Humphrey: A color photo of Humphrey with President Lyndon Johnson, a short biography, bibliography, and links.