Here are some related crypto sites worth visiting:Dirk Rijmenants' Cipher Machines and Cryptology
Communications and Electronics Museum - Kingston, Ontario
COMWEB Museum - The Heritage of Canada's Foreign Service Communicators
CSP Designator Listing - via USS Pompanito web page
ECM Mark II - From the USS PAMPANITO Web Page
Nigel West Web Site - An author specialising in security and intelligence issues.
North American Communications Museum Don Robert House - Curator
Last checked: Sept 7/17