Whether you collect them or still use them to send mail, the postage stamp has had an interesting history.
The history of airmail in the United States - RFD-TV
Newman Numismatic Portal at Washington University in St. Louis
History of the Postage Stamp - from 1842 to the present - The Cowboy Channel
The History of TV, As Told Through Postage Stamps
Timeline of Philatelic Literature, 1830 - 1875
INSIDER 29 The Story Behind the Stamp
Sale 2919 - United States, British Commonwealth, and Foreign Stamps and Covers by H.R. Harmer - Issuu
The History of TV, As Told Through Postage Stamps
Sale 2919 - United States, British Commonwealth, and Foreign Stamps and Covers by H.R. Harmer - Issuu
U.S.%20Revenue%20Stamps%20%26ndash%3B%26nbsp%3B%0AExpand%20Your%20Collection%26nbsp%3Bor%26nbsp%3B%0AStart%20a%20New%20One%0AIntricate%20Revenue%20sta
R243 - 1933 $4 US Internal Revenue Stamp - engraved, yellow brown