Still, no message was permitted on the address side. To distinguish a printed postcard from a real photo postcard, examine it under a magnifying glass and you will see the dot pattern that is characteristic of printed cards. The "H" refers to the printing method called Art Colortone. Three-dimensional postcards also appeared in this era. By s, the standard size of cards had grown to 4 x 6 inches. A history timeline such as at http: They are difficult to discern from real photos but usually don't have the glossy finish of photographs.
What model of vehicles?
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The first unassisted coast-to-coast direct dialing with a three-digit area code began on November 10, Writing was still not permitted on the address side. If there is no stamp box, or a generic stamp box, go to Postcards Backs. Is a wall calendar in the picture? The following table comes from Historical statistics of the United States: