For Kids: History Of… The Postage Stamp - America250
USPS wants to raise the price of a first-class postage stamp to 66 cents
USPS YEAR SET COMPLETE MINT SET OF POSTAGE STAMPS ISSUED IN THE India | Ubuy
On this day in history, July 1, 1847, the US Post Office issues the first stamps | Fox News
How does the post office figure out the value of old stamps like this? Does using old stamps cause any problems compared to using current stamps? : r/ USPS
Was invalidating stamps considered under 1970 Postal Reorganization Act?