Keywords: Us airmail stamp C42.jpg en wikipedia 2012 January 22 scan 1949-11-18 usps PD-USGov-pre1978stamp Original upload log en wikipedia FSII CommonsHelper page en wikipedia Us_airmail_stamp_C42 jpg 2010-01-16 04 29 Nasa-verve 280×181× 26457 bytes <nowiki> en November 18 1949 10¢ Violet U P U P O Building C42 21 061 300 scan usps 1949-11-18 Airmail s</nowiki> Category Buildings of the United States government in Washington D C Historic district contributing properties in Washington D C Landmarks in Washington D C Office buildings in Washington D C Airmail stamps of the United States |