U.S.A. 1948 First Flight AM 94, Buffalo to New York, cachet cover
U.S.A. 1948 First Flight AM 95, Seattle to Honolulu, cachet cover
U.S.A. 1948 First Flight FAM 18, Boston to Barcelona, Spain cachet cover
U.S.A. 1948 First Flight FAM 18, New York to Barcelona, Spain cachet cover
U.S.A. 1948 Galveston's 36th Anniversary of Air Mail cachet cover
U.S.A. 1949 First Flight AM 30, Rome G.A. to Atlanta cachet cover
U.S.A. 1949 First Flight AM 43, Bartleville to Tulsa, cachet cover
U.S.A. 1949 First Flight AM 84, Claremont to Los Angeles, cachet cover
U.S.A. 1949 First Flight AM 84, Rialto to Los Angeles, cachet cover
U.S.A. 1949 First Flight AM 86, Brainerd to Hibbing, cachet cover
U.S.A. 1949 First Flight AM 90, Fairbury to North Platt, cachet cover
U.S.A. 1949 First Flight AM 94, Syracuse to Albany, cachet cover
U.S.A. 1949 First Flight AM 94, Washington to Pittsburg, cachet cover
U.S.A. 1949 First Flight AM 97, Baltimore to Pittsburg, cachet cover
U.S.A. 1949 First Flight AM 97, Connellsville to Washington, cachet cover
U.S.A. 1949 First Flight AM 97, Hagerstown to Pittsburg, cachet cover
U.S.A. 1949 First Flight AM 97, Harrisburg to Pittsburg, cachet cover
U.S.A. 1949 Tuscon Airport Dedication cachet cover
U.S.A. 1960 Arctic, Ellesmere Ice Shelf cachet cover
U.S.A. 1960 Arctic, Ellesmere Ice Shelf cachet cover, 5 x 1c stamps
U.S.A. 1962 U.S. Naval Ross Ice Shelf Antarctic Survey cachet cover
U.S.A. 1963 5c on cover, U.S.N Pole Station Antarctica cancel
U.S.A. 1963 Airmail cover, USARP cachet. U.S.N Pole Station Antarctica cancel
U.S.A. 1963 USARP, U.S.N.S. Eltanin, National Science Foundation cachet cover