
Charles Proteus Steinmetz was a towering figure in the early decades of electrical engineering, easily the intellectual equal of Thomas Edison and Nikola Tesla—men he considered his friends. One of Steinmetz’s most significant achievements was to quan…

Dizzy Gillespie was a fan. Frank Sinatra bought one for himself and gave them to his Rat Pack friends. Hugh Hefner acquired one for the Playboy Mansion. Clairtone Sound Corp.’s Project G high-fidelity stereo system, which debuted in 1964 at the Nation…

Thanks to Hollywood, whenever I think of a Dictaphone, my imagination immediately jumps to a mid-20th-century office, Don Draper suavely seated at his desk, voicing ad copy into a desktop machine. A perfectly coiffed woman from the secretarial pool th…