Honoring Glenn Curtiss Block of Stamps

OFFICIAL FIRST DAY OF ISSUE EARLY AMERICAN AIRCRAFT DESIGNER AND MANUFACTURER Honoring GLENN CURTISS 1878-1930 PIONEER AVIATION SERIES 35¢ AIRMAIL STAMP ArtCraft DEC 30 1980 14840 Glenn Curtiss Aviation Pioneer USAITMAIL ceccele pe BAY OF YSSUE HAST OCCCCCCC Glenn Curtiss Aviation Pioneer USAirmail 35c Glenn Curtiss Aviation Pioneer Up mall 35c СССССССССС Glenn Curtiss Aviation Pioneer USAirmail 35c