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Postal Service, United States
see also Stamps and Stamp Collecting
abbreviations for U.S. states and dependencies
administration
airmail
commemorative stamps
Congress and the Postal Service
fax mail
first stamps issued
history of the Postal Service
mail and obscenity laws
most valuable collectable stamp
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notable people who have worked for the Post Office
power of government to establish service
service sector of U.S. economy
stamps
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wartime postage exemption for prisoners of war
Stamps and Stamp Collecting
Stamps and Stamp Collecting
. Postage stamps are adhesive labels affixed to letters or parcels to indicate that a specified amount of postage has been...
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