The perforation centennial, 1857-1957
Subtitle: the first perforated United States stamps, 1c, 3c, 5c, 10c, 12c, 24c, 30c, 90c, 1857-1860.
By: Sponsored by the 3c 1851-1857 Unit of the American Philatelic Society, July 4-6, 1957, National Philatelic Museum, Philadelphia.
Contributors: Philadelphia. National Philatelic Museum.
Published: 1957
Place of publication: [Philadelphia?]
Language: eng
Number of pages: 232
Subjects: Postage-stamps -- United States.