* VON BRAUN, Wernher (1912-1977). Autograph mathematical equation and diagram in pencil on place card. N.p., n.d.
1 page, small 16mo (63 x 89 mm). Formula to determine the velocity of flight necessary to send a vessel to space to float in the Earth's orbit, diagram on verso. [With:] Clipped signature on the back of Frederick S. Blackall Jr.'s business card.
Estimate $ 400-600
Property from the Robert L. McKay Collection, North Tustin, California