History of United States postage rates
http://dbpedia.org/resource/History_of_United_States_postage_rates
The system for mail delivery in the United States has developed with the nation. Rates were based on the distance between sender and receiver in the early years of the nation. In the middle of the 19th century, rates stabilized to one price regardless of distance. Rates were relatively unchanged until 1968, when the price was increased every few years by a small amount. Comparing the increases with a price index, the price of a first class stamp has been steady. The logo for the Post Office showed a man on a running horse, even as the railroads and then motorized trucks moved mail. In 1970, the Post Office became the Postal Service, with rates set by the Postal Regulatory Commission, and some oversight by the Congress. Air mail became standard in 1975. In the 21st century, prices were segm
rdf:langString
rdf:langString
History of United States postage rates
xsd:integer
1653050
xsd:integer
1107340131
rdf:langString
The system for mail delivery in the United States has developed with the nation. Rates were based on the distance between sender and receiver in the early years of the nation. In the middle of the 19th century, rates stabilized to one price regardless of distance. Rates were relatively unchanged until 1968, when the price was increased every few years by a small amount. Comparing the increases with a price index, the price of a first class stamp has been steady. The logo for the Post Office showed a man on a running horse, even as the railroads and then motorized trucks moved mail. In 1970, the Post Office became the Postal Service, with rates set by the Postal Regulatory Commission, and some oversight by the Congress. Air mail became standard in 1975. In the 21st century, prices were segmented to match the sorting machinery in use; letters too large for the machines required slightly higher postage.
xsd:nonNegativeInteger
21492
