Before you mail out that wonky-sized birthday card or lumpy wedding invitation, you should check if it costs more. For envelopes that are square, bigger than usual, aren’t flat or shaped weird, you’re ...
BUFFALO, N.Y. -- The square has four equal sides and four right angles. It is a regular shape. To the U.S. Postal Service, however, the square is "unusual." Its sorting machines, built for oblongs, ...
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