Recycled Paper Greetings, Inc. (RPG) is a Chicago-based greeting card company founded by Phil Friedmann and Mike Keiser in 1971. They became successful as one of the first greeting card companies to print their product on recycled paper, and to give their artists recognition by putting their names on the cards. The designs created by Sandra Boynton became very well known, especially her "Hippo Birdie Two Ewes" birthday card.