Keywords: Puerto Rico 1937 U.S. stamp.tiff en The stamp program to recognize the territories of the United States included a 3-cent stamp on November 25 1937 in honor of Puerto Rico The U S acquired Puerto Rico from Spain by treaty in 1898 The stamp displays the old Governor's Palace known as 'La Fortaleza' 2014-03-06 14 26 27 U S Post Office; Arago people postage the post Bureau of Engraving and Printing PD-USGov Uploaded with UploadWizard Stamps of the United States 1931-1940 La Fortaleza History of the United States on stamps U S territories on stamps U S historical landmarks on stamps |