Rare set of 4 Shuttle & Apollo crew autographed photographs 12x12

Set of four crew autographed photos made to Martin Hamilton, Robert Hamilton's then young son. Apollo 15 prime crew and the fourth manned lunar landing is autographed " Martin , My Best Wishes, John Irwin", second is the two man crew for the second space shuttle orbital test STS-2 and is autographed "To Martin, Richard Truly. Joe Ingle is the pilot on left. Third is signed "To Martin Jay Apt", The last is a photograph for STS-9 shuttle orbital flight and is autographed by two of the crew" To Martin, Best Wishes From STS-9, ( Byron Lichtenberg), and also Signed by John Young. Excellent condition