Arbeitsgemeinschaft USA CANADA ArGe USA CANADA
Bund Deutscher Philatelisten e.V. BdPh
Forum des Bundes Deutscher Philatelisten BdPh Forum
American Philatelic Society APS
Philatelistische Bibliothek Hamburg Philatelistische Bibliothek Hamburg
Linn's Stamp News und Scott Katalog Linn's
Philatelistic Foundation Philatelistic Foundation
The Canal Zone Study Group CZSG
TPO & Seapost Society - German Sea Post Offices on German and American Ships TPO & Seapost Society
The digitized "Postal Bulletins" and "Postal Laws & Regulations" of the USA US POSTAL BULLETINS and PL & Rs
"Statue of Liberty" and "Ellis Island" - Archive about travelers arriving by ship (Also US citizens) The Statue of Liberty - Ellis Island Foundation, Inc.
National Archives National Archives
Example: National Archives - Post Office Records National Archives - Post Office Records
Europeana - Network of many European libraries (also the one in Hamburg) - here the newspapers (English site) Europeana - Newspapers

Copyright J├╝rgen Kuseler 2023