Summary of Postcard [Post Card] Postage Rates

for the United States (1898 to 1952)

1898 1¢
1917 2¢
1919 1¢
1925 2¢
1928 1¢
1952 2¢

Complete details of Postcard [Post Card] and Postal Card Postage Rates for the United States (1863 to 1952) can be found in this PDF:

us-postcard-rates.pdf

POD Publication 15, United States Domestic Postage Rates, 1789-1956, a publication of the Post Office Department, Washington, DC