HPO

HPO - see Highway Post Office.
Huck Multicolor Press - a nine-color, web-fed, intaglio press used by the BEP from 1968 to 1976. The Huck Press could print, tag, gum, and perforate stamps in one continuous operation.

HPO - an abbreviation of the Highway Post Office Service which operated between 1941 and 1974. Highway Post Office buses were used to replace Railway Mail Service in areas where train service had been discontinued.

HPO
Highway Post Office. The Post Office sorted mail on special motor vehicles in transit between cities. This system was in use from the late 1930s through the mid-1970s. FDCs were occasionally cancelled with HPO markings. [Back to top]
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HPO: Highway Post Office. Portable mail-handling equipment for sorting mail in transit on highways (normally by truck). The last official U.S. HPO ran June 30, 1974.
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These highway post office (HPO) vehicles were initially intended to supplement RPO service, but in the 1950s and 1960s, HPOs often replaced railway post office cars after passenger train service was discontinued.

Starting in the 1940's, as Americans began to abandon the rails in favor of asphalt and concrete, Highway Post Offices (HPO's) came into use. These were buses, which collected and delivered mail, sorting it on the way to the next Post Office.

Highway Post Office (HPO) - Portable mail-sorting equipment for mail in transit on highways.
Hinge - Piece of glassine or parchment paper used for mounting stamps on album pages.

" MPOs comprise portable mail-handling equipment and personnel, generally in railroad cars, streetcars, trucks or buses. Mail handled by an MPO is normally identifiable as such by the postmark. RPO ("railway post office") and HPO ("highway post ...

Highway Post Office (HPO): motor vehicles used for collection, sorting and distribution of
mail operated by U.S. Post office between Washington, DC and Harrisburg, Va in 1941.
Hiiumaa: bogus issue, not valid for postage.

See also: Used, Local, Stamp, Highway Post Office, Cover