Add Yahoo as a preferred source to see more of our stories on Google. FlamingPumpkin / E+ via Getty Images Many postcards sold for a few cents (or even a penny) when they were first made, but they’re ...

Postcards from far-flung locales like St. Petersburg and Jaipur along with promotional mailers are among the objects showcased in a new online exhibition presented by the Petaluma, California–based ...