По ссылке https://forumuuu.com/showthread.php?t=529179&page=13 один пользователь привёл ссылку где можно скачать, почитать филлитературу по почтовой истории США - http://www.collectorsclubchicago.org...-handbooks.php
New York Foreign Mail CancellationsNew York Foreign Mail Cancellations, 1870-1876, Arthur Van Vlissingen and Morrison Waud (1968)
Chicago Postal HistoryChicago Postal History, Editor: Harvey M. Karlen (1971)
The United States 1869 Issue: An Essay-Proof HistoryThe United States 1869 Issue: An Essay-Proof History, Fred P. Schueren (1974)
United States Mail and Post-Office Assistant 1860-1872, Introduction by Michael Laurence - Volume I - XII (1975)
Colorado Territorial and pre-Territorial PostmarksColorado Territorial and pre-Territorial Postmarks, David L. Jarrett (1976)
The Postal Markings of New Jersey Stampless Covers - William C. Coles Jr.The Postal Markings of New Jersey Stampless Covers, William C. Coles Jr. (1983)
he Express Mail of 1836-1839 - James W. MilgramThe Express Mail of 1836-1839, James W. Milgram, M.D. (1984)
The Minnesota Territory In Postmarks, Letters and Covers - Floyd E. RisvoldThe Minnesota Territory In Postmarks, Letters and Covers, Floyd E. Risvold (1985)
British Pictorial Envelopes of the 19th CenturyBritish Pictorial Envelopes of the 19th Century, Ritchie Bodily, Chris Jarvis and Charless Hahn (1986)
Postage Due: The United States Large Numeral Postage Due Stamps, 1879-1894Postage Due: The United States Large Numeral Postage Due Stamps, 1879-1894, George B. Arfken (1991)
An Encyclopedia of Texas Post Offices, Texas Post Offices Under Five Flags By Walter G. SchmidtAn Encyclopedia of Texas Post Offices, Texas Post Offices Under Five Flags Walter G. Schmidt (1993)
New Hebrides Islands Military Postal HistoryNew Hebrides Islands: Military Postal History of the United States Forces, 1942-1946, Stanley C. Jersey (1994)
The Stamps of the Mexican Revolution, 1913-1916The Stamps of the Mexican Revolution, 1913-1916, Nicholas Follansbee (1996)
United States Patriotic Covers of World War II by Lawrence Sherman, M.D.United States Patriotic Covers of World War II, Lawrence Sherman, M.D. (1999)
Canada's Registered Mail 1802 - 1909Canada's Registered Mail 1802 - 1909, From Money Letters through Insurance for a Fee, Horace W. Harrison, George B. Arfken and Harry W. Lussey (2002)
The Hungarian HyperinflationThe Hungarian Hyperinflation of 1945-1946: The Postage Rates and Postal History of History’s Most Impressive Inflation, Robert B. Morgan (2003)