United States Postal Service Websites
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Stamps.com - Buy Postage Online, Print USPS Stamps and Shipping Labels
Buy USPS postage online from your PC, easily print postage stamps and shipping labels for all USPS mail classes.
9,181 
$ 1,752,840.00
National Association of Letter Carriers AFL-CIO
The National Association of Letter Carriers (NALC) is the national labor union of city delivery letter carriers employed by the United States Postal Service.
538,372 $ 2,400.00