This is a lot of two Vintage Postcards. Licensed by USPS, these “American Novels” Book Stamp series were transformed into Puzzle postcards! Here are two of four that made up the set. Titles are “Little House on the Prairie” and “Little Woman”. Stamp puzzle image is covered by a thin plastic veneer to protect it during mailing. Reverse has stamp information, address and message space as well as an instruction block for the addressee, so they understand the postcard is also a puzzle! Condition is very good "Used". Shipped with USPS First Class.