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  2. List of United States airmail stamps - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    Domestic air mail became obsolete in 1975, and international air mail [2] in 1995, when the USPS began transporting First Class mail by air on a routine basis. [3] [4] All post-1977 United States stamp images are copyright of USPS. [5] Scott cataloged stamps received a "C" designation for airmail issues beginning in 1940. Designated for ...

  3. Airmail stamp - Wikipedia

    en.wikipedia.org/wiki/Airmail_stamp

    An airmail stamp is a postage stamp intended to pay either an airmail fee that is charged in addition to the surface rate, or the full airmail rate, for an item of mail to be transported by air. [1] Airmail stamps should not be confused with airmail etiquettes , which are affixed to mail as an instruction to the postal authority that the mail ...

  4. History of United States postage rates - Wikipedia

    en.wikipedia.org/wiki/History_of_United_States...

    This plot shows that, despite the nominal rise in the cost of a first-class stamp, the adjusted cost of a stamp has stayed relatively stable. Since at least the early 1980s, the price of a stamp has closely followed the consumer price index. The large jumps in the early 1900s are because a change by a single penny was significant compared to ...

  5. Postage stamps and postal history of the United States

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    Benjamin Franklin — George Washington The First U.S. Postage Stamps, issued 1847. The first stamp issues were authorized by an act of Congress and approved on March 3, 1847. [20] The earliest known use of the Franklin 5¢ is July 7, 1847, while the earliest known use of the Washington 10¢ is July 2, 1847.

  6. United States airmail service - Wikipedia

    en.wikipedia.org/wiki/United_States_airmail_service

    After an intermittent series of government sponsored experimental flights between 1911 and 1918, domestic U.S. Air Mail was formally established as a new class of service by the Post Office Department on May 15, 1918, with the inauguration of the Washington–Philadelphia–New York route for which the first of special Air Mail stamps were issued.

  7. Inverted Jenny - Wikipedia

    en.wikipedia.org/wiki/Inverted_Jenny

    Inverted Jenny. The Inverted Jenny (also known as an Upside Down Jenny, Jenny Invert) is a 24 cent United States postage stamp first issued on May 10, 1918, in which the image of the Curtiss JN-4 airplane in the center of the design is printed upside-down; it is one of the most famous errors in American philately.

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