Footnotes
- 1955 . Time , April 11 : 53
- Tebbel , John . 1947 . An American Dynasty , 120 Garden City, New York : Doubleday & Company, Inc. .
- 1952 . Congressional Digest , 31 ( 2 ) Feb. : 56
- 1943 . The Chicago Tribune , April 28
- 1955 . Time , April 11 : 53
- 1944 . The Chicago Tribune , November 11
- 1953 . Reporter , 9 Aug. 4 : 35
- 1955 . Time , April 11 : 53
- 1931 . The Chicago Tribune , April 9
- 1955 . Time , April 11 : 53
- 1955 . Nation , April 30 : 363