External links Mail
a hundred years post j. wilson hyde
potts, albert, us19,578 (first u.s. street mailbox patent) . patent office. 1858
the british postal museum & archive
royal engineers museum british army postal services history
james meek, london review of books, 28 april 2011, in sorting office, 33(9)
u.s. national postal museum, part of smithsonian institution
universal postal union, part of united nations
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