William F. Friedman and Elizebeth S. Friedman: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Revised the display. Jun 24, 2026
First paragraph modernization. Mar 05, 2024
Add new Web site: Folger Shakespeare Library - The First Cryptographic Couple. Feb 20, 2022
Added video. Dec 14, 2015
Media added. Jun 30, 2009
Article added to new online database. Jul 20, 1998
View Changes:
Article History
Revised:
By: