411 REFERENCE · Wikibooks
World Stamp Catalogue/United States/1851-57
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
USA-1851 (1851-57 Issue)
Imperforate. Printed by Toppan, Carpenter, Chasilear & Co.
World Stamp Catalogue/United States 1851-57 1847 1857-61