DescriptionPostcard: [QSL card] W2LST. "Don" Ferrari, 232 Jackson Street, Hoboken, New Jersey, U.S.A. Postmarked Jan. 25, 1940. A QSL (morse code for "I acknowledge receipt") card issued by amateur radio station operator ("ham radio operator") Ferrari confirming communication with another station on January 24th. Card is a printed form filled out with some technical data that station operators exchanged with each other. The logo of the ARRL (American Radio Relay League) appears twice on the front.