American SIGINT And The Indochina War (NSA and Secrecy News)

In case you missed it, Steven Aftergood at Secrecy News is maintaining a declassified version of the NSA's "Spartans in Darkness: American SIGINT and the Indochina War, 1945-1975". Mr. Aftergood reports, "The author, Robert J. Hanyok, writes in a lively, occasionally florid style that is accessible even to those who are not well-versed in the history of SIGINT or Vietnam." I can see it as very useful in an intelligence history class either for the lessons learned or as supplemental reading material.