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A097618
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Successive basic U.S. postal rates since "uniform" rates (based on weight, not distance) were adopted in 1863.
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1
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3, 2, 3, 2, 3, 4, 5, 6, 8, 10, 13, 15, 18, 20, 22, 25, 29, 32, 33, 34, 37, 39, 41, 42, 44, 45
(list;
graph;
refs;
listen;
history;
text;
internal format)
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