Crystal Clear: The Struggle for Reliable Communications Technology in World War II -- Now Shipping! -- A story of the quartz crystal—a technology that changed the tide of World War II.

Perera's Telegraph Collectors Reference CD -- A complete source of information for all those interested in telegraph keys from beginner to avid collector.

The Story of the Enigma: History, Technology and Deciphering -- The ultimate reference on the Enigma!

World War II Radio Heroes: Letters of Compassion -- A story about ham radio operators and others who helped ease worries during a time of war.

50 Years of Innovation w/ Bonus Calendar -- Now Shipping! -- This guided tour of more than 400 legendary radios from 1930 to 1980, depicts the “golden age” of American radio technology.