I'm continuing my series of scanning, transcribing, and annotating my grandfather's love letters to my grandmother leading up to their marriage in June 1940. The letters are chronologically organized and preserved, using the methods I discuss in detail in my book, Creating Family Archives: How to Preserve Your Papers and Photographs.
In the 11th letter in the series, Grandma and Grandpa celebrate Valentine's Day. He sent flowers, and she sent a card, probably similar in style to this card.