Price Stern Sloan  Price Stern Sloan (originally known as Price/Stern/Sloan) or PSS! was a publisher (now an imprint of the Penguin Group) that was founded in Los Angeles in the early 1960s to publish the Mad Libs that Roger Price and Leonard Stern had concocted during their stint as writers for "Tonight Starring Steve Allen" and also the "Droodles". Along with their partner Larry Sloan, they expanded the company into children's books, novelty formats, and humor. Some of the books they published include movie tie-ins for films such as "Happy Feet", "Wallace and Gromit", "Catwoman", and "Elf", "How to Be a Jewish Mother" (1964), and other properties such as "Serendipity", "Mr. Men" and "Little Miss" and "Wee Sing". Today, PSS! still publishes approximately ten Mad Libs books a year. Mr. Stern and Mr. Sloan went on to found Tallfellow Press in Los Angeles. The Putnam Publishing Group (now the Penguin Group, and now part of Penguin Random House) bought Price Stern Sloan in 1993, and in 1997 the headquarters were moved to New York. Though Penguin Random House still publishes titles that used to be published by Price Stern Sloan, they no longer use Price Stern Sloan as an imprint.