Golden Anniversary United States Mail Service, 1918-1968 Block of Stamps

GOLDEN ANNIVERSARY U.S.AIR MAIL@G GOLDEN ANNIVERSARY OFFICIAL FIRST FIRST FLIGHT FROM WASHINGTON TO NEW-YORK VIA PHILADELPHIA MAY 1514918 Art Craft DAY COVER EW YORK PHILADELPHIA Golden Anniversary AIR MAIL SERVICE 15 1968 WASA 50th ANNIVERSARY U.S. AIR MAIL SERVICE 1918-1968 Judson Lindsay "4314 11. Nelson Her. Peoria Ill AIR MAIL 50th ANNIVERSARY U.S. AIR MAIL SERVICE GO 10¢ FIRST DAY OF ISSUE AIR MAIL 50th ANNIVERSARY U.S. AIR MAIL SERVICE 10¢ CECCO AIR MAIL 10¢ 50th ANNIVERSARY U.S. AIR MAIL SERVICE AIR MAIL 10¢