Lot 2754

BIBLIOGRAFÍA. ESTADOS UNIDOS: The Gold Rush Mail Agents to California 1849-1852, T. WIERENGA (1987); 19th Century United States Fancy Cancellations, H. SOMPSON (1963); The Dworak Specialized Catalog of U.S. Air Mail Covers, The Gossip Printery (1930); Scott's Specialized Catalogue, First Edition (1923); Classic United States Stamps 1845-1869, C. CHASE (1962); The 24c Air Mail Inverted Center of 1918, H. GOODKIND (1956); Postal Markings 1847-1851, M. HAHN (1938); One Cent Issues of 1851-1857, W. KENWORTHY; The Precancel Stamp Society (1998).