NASA postcard sent to Sally Ride in 1977, confirming the receipt of her application to the Astronaut Candidate Program. Ride learned that NASA was opening its astronaut ranks to women earlier in 1977, with this postcard likely the first communication from NASA in what would be a groundbreaking career. With Ride's name and Stanford University address typed to front. Measures 5.5'' x 3.5''. Near fine condition. With an LOA from CMG Worldwide who represents the Sally Ride estate.