Price of a first-class stamp to go up by 1 cent - CBS News
Postage prices go up ... again - Oct. 18, 2011
I found these USA First Class stamps from 2000. Does anybody know what they would be worth if used as postage? There's not a price marked on them. : r/ stamps
Price of stamps to increase starting in July
First-class stamps will cost almost £1 as letter use falls | News | The Times
History of United States postage rates - Wikipedia
Stamp Prices To Increase This Summer Under 10-Year Overhaul Plan | Recent News | DrydenWire.com