Keywords: Colorado statehood 1951 U.S. stamp.tiff en Colorado celebrated its statehood 75th anniversary with a 3-cent stamp on August 1 1951 The central design is of Colorado ™s capitol building flanked in the background with Mount of the Holy Cross and the state seal In the foreground appear the state flower the columbine and mounted cowboy 2014-04-09 17 22 50 Arago people postage the post online National Postal Museum Bureau of Printing and Engraving PD-USGov Uploaded with UploadWizard U S territories on stamps Stamps of the United States 1951-1960 |