United States. Post Office Department. Division of Stamps. (1937). A description of United States postage stamps: Issued by the Post Office Department from July 1, 1847, to December 31, 1936. United States Government Printing Office.
Chicagoスタイル(17版)引用形式United States. Post Office Department. Division of Stamps. A Description of United States Postage Stamps: Issued by the Post Office Department from July 1, 1847, to December 31, 1936. Washington: United States Government Printing Office, 1937.
MLA(9版)引用形式United States. Post Office Department. Division of Stamps. A Description of United States Postage Stamps: Issued by the Post Office Department from July 1, 1847, to December 31, 1936. United States Government Printing Office, 1937.
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