Greetings cards became a world-wide phenomenon. This remarkable development was fueled by the postcard’s convenience and cost ...

We’ve rounded up some of the best vintage Valentine’s Day cards ... Hallmark founder J.C. Hall began selling Valentine's Day postcards. As postcards declined in popularity, greeting cards ...

Nothing says romance like a Valentine's Day card, especially one from back in the day. These retro cards feature Cupid, love poems, and sweet doves.