Postcard

A postcard or post card is a piece of thick paper or thin cardboard, typically rectangular, intended for writing and mailing without an envelope. Non-rectangular shapes may also be used but are rare.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

POSTKID

Help kids fall in love with the mail — free calculators for postage, delivery times, envelope and paper sizes, pen-pal time zones, stamp counts, and letter reading level, plus friendly guides to letter writing, pen pals, postcards, and snail-mail crafts for families and classrooms.

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