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Gopost® and Metro Post™ tested
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Every Door Direct Mail® introduced
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Free usps.com iPhone app offered
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Competitive pricing for expedited mail began
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“Forever” stamp issued
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Postal Accountability and Enhancement Act signed
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U.S. semipostal stamp issued
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Postal Service launched public Internet site
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National Postal Museum opened
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Self-adhesive stamps introduced nationwide
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ZIP+4® Code began
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Last year Postal Service™ accepted public service subsidy
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Self-adhesive stamps tested
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United States Postal Service® began operations
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Labor contract negotiated through collective bargaining, a federal government "first"
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Express Mail® began experimentally
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ZIP Code inaugurated
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Citizens' Stamp Advisory Committee established
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Residential deliveries reduced to one a day
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Scheduled airmail service began
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Parcel Post® began
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Rural free delivery began
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First commemorative stamps issued
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General Postal Union (now Universal Postal Union) established
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U.S. postal cards issued
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Free city delivery began
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Pony Express began
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Prepayment of postage required
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U.S. postage stamps issued
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Benjamin Franklin appointed first Postmaster General by the Continental Congress