About This Stamp
This 1985 stamp honors aviation pioneers Lawrence and Elmer Sperry. Elmer was awarded more than 400 patents. He revolutionized flying with such devices as the gyro compass and speed-direction indicators. Lawrence helped to develop and test such aviation innovations as the automatic pilot, retractable landing gear, and the first guided missile in the form of an aerial torpedo.
First Day of Issue Ceremony
First Day of Issue Date: February 13, 1985
First Day of Issue Location: Garden City, NY