William F. Friedman

The Shakespearean Ciphers Examined: An analysis of cryptographic systems used as evidence that some author other than William Shakespeare wrote the plays commonly attributed to him

Elizabeth S. Friedman, William F. Friedman, 1957 .

An Introduction to Methods for the Solution of Ciphers

William F. Friedman, 2008 .

The Shakespearean Ciphers Examined

William F. Friedman, C. Thayer, Elizebeth S. Friedman, 1958 .

Notes on Code Words

William F. Friedman, Charles J. Mendelsohn, William F. Friedman, 1932 .