Newsletter of the Mercurians,
in the Society for the History
of Technology

Volume 10, No. 1,
November 1997

Mercurial Matters

1998 in Baltimore

Mercurian's Activities

News of the Field in Brief

Spread Spectrum

Related Websites

Joseph Henry, Radio Pioneer

Book Reviews
Media and Revolution

Contact Us


Cover: SIGABA, the premier U.S. cryptographic instrument of the World War II period. William W. Ward discussed this rotor-based cipher device in his review of the National Cryptologic Museum in the November 1996 issue of this newsletter. See the story of spread-spectrum technologies, as we continue to analyze the histories of secure and coded communications. Photo courtesy of the National Cryptologic Museum in Maryland.