These postcards cost 1 penny to mail. Postage was temporarily raised to 2 pennies from 1917 to 1919 to cover the cost of World War I & from 1925 to 1928.
In 1898, Congress authorized the use of postcards manufactured by others and 1907, Congress allowed the back to be divided so that the sender could write a message on the left side of the back and the address to whom the post card was to be sent on the right side. At first, the message area was much smaller than the address area, but eventually the two areas became the same size. Most of these cards were printed in Germany. When World War I broke out, this industry suffered greatly and many of the printing plants were never re-built after the war.
![Edwards School, Troy [1906]](miami/postcards/edwsch.jpg "Edwards School, Troy [1906]")
