RR Auction: Science and Technology Auction

Archive of original photos and patents relating to the work of French aircraft designer and spaceflight theorist Robert Esnault-Pelterie, which includ

Anglo-French Grand Prix motor racing champion, aviator, and an aircraft manufacturer and designer (1877–1964). ALS in French, signed “M. Farman,” one

Flown airmail cover carried on the first flight of the Douglas D-558-2 Skyrocket on February 4, 1948, signed in blue ballpoint by the pilot, "J...

Two flown covers carried on experimental aircraft, both with stamped cachets filled out with information on the flights, signed by the respective pilo

Group of five airmail covers flown on experimental helicopters, all with stamped cachets filled out with information on the flights, signed by the res

Group of nine airmail covers flown on military jets, all with stamped cachets filled out with information on the flights, signed by the respective pil

Group of eight airmail covers flown on United States military aircraft, all with stamped or typed cachets filled out with flight information, signed b

Group of six airmail covers flown on passenger jets, all with stamped or typed cachets filled out with information on the flights, signed by the respe

Rare flown airmail cover with a stamped cachet reading, "U. S. Missile Mail, May 1, 1959, Point Mugu, Calif.," postmarked at Point Mugu, C...

Two flown covers carried on flights by USAF astronauts who never went to space, both with cachets filled out with information on the flights, signed b