The Postal History Society
- The Postal History Society was founded in 1936 to promote and encourage the study, enjoyment and understanding of the postal service worldwide from its beginning to the present day.
- http://www.postalhistory.org.uk/

Cape of Good Hope Postal History
- Postal History of the Cape of Good Hope and Southern Africa.
- http://www.capepostalhistory.com

Finland Postal History (1891 - 1918)
- Stamp issues, postal rates, postal marking and postal stationery of Finland, including Russian stamps and stationery valid within Finland.
- http://home.online.no/~birmikk/stamps/

Rufus Easton first postmaster of St. Louis
- Rufus Easton was a famous postmaster of Saint Louis and judge of the Louisiana Territory appointed by Thomas Jefferson.
- http://ciajfk.com/rufuseaston.html

Rossiter Trust
- A Charitable Trust devoted to the Study of Postal History.
- http://www.rossitertrust.com

Positively Postal
- Displays examples of postal culture from Great Britain and other nations. Includes a timeline and a photo gallery.
- http://www.positivelypostal.co.uk/

US Specialized Collections
- Information on specialized collections of United States airmail issues.
- http://members.shaw.ca/sbdavis/

Air Mails of New Zealand
- Offers detailed exploration of philatelic materials related to the country's aviation history.
- http://homepages.paradise.net.nz/wclark/

Postal History of Early Cross-Channel Mail
- Illustrates covers of early cross channel mail and describes the way letters were carried between Britain and Europe from 1423 to 1843.
- http://www.sw19j.com/

World Postal History
- Over 5000 worldwide postal history covers for sale. Everything scanned with a good search engine.
- http://www.world-postal-history.com/

Ukraine Stamps and Postal History
- Selling stamps and postal covers from Ukraine, Russia and area.
- http://home.cogeco.ca/~rzelonka/index.html

Postal History of Sudetenland 1938-1945
- Features various aspects of postal services of Sudetenland during 1938-1945.
- http://sudeten.bizland.com/postal_history.htm

Philately and Postal History
- Portal site for philatelists, postal historians, and philatelic societies to communicate, find out about events, and find links to dealers and auction houses
- http://philatelyandpostalhistory.com/