Stamps from 1940-1949 June 25, 1941 6¢ Carmine Transport Plane Scott #C25 March 21, 1944 8¢ Olive Green Transport Plane Scott #C26 August 15, 1941 10¢ Violet Transport Plane Scott #C27 August 10, 1941 15¢ Brown Transport Plane Scott #C28 August 27, 1941 20¢ Green Transport Plane Scott #C29 September 25, 1941 30¢ Blue Transport Plane Scott #C30 October 29, 1941 50¢ Orange Winged Globe Scott #C31 September 26, 1946 5¢ Carmine DC-4 Skymaster Scott #C32 March 26, 1947 5¢ Carmine DC-4 Skymaster Scott #C33 August 30, 1947 10¢ Black Pan-Am Union Building, Wash. D.C. Scott #C34 August 20, 1947 15¢ Green Statue of Liberty Scott #C35 July 30, 1947 25¢ Blue Bay Bridge Scott #C36 January 15, 1948 5¢ Carmine (Coil) DC-4 Skymaster Scott #C37 July 31, 1948 5¢ Red New York City Scott #C38 January 18, 1949 6¢ Carmine DC-4 Skymaster Scott #C39 May 11, 1948 6¢ Carmine Alexandria Bicentennial Scott #C40 August 25, 1949 6¢ Carmine (Coil) DC-4 Skymaster Scott #C41 November 18, 1949 10¢ Violet U.P.U. Scott #C42 October 7, 1949 15¢ Ultramarine U.P.U. Scott #C43 November 30, 1949 25¢ Rose U.P.U. Scott #C44 December 17, 1949 6¢ Magenta Wright Brothers Scott #C45