A Pullman insert (called a rider by Pullman) advertising Tasty Snacks including American Cheddar Cheese with Crackers 55c, Cracker and Butter 15c, Milk (Individual Container) 25c, Planters Cocktail Salted Peanuts 35c. Used with a 1955 Three (3) Musketeers stock cover for the Rock Island (RI) Rocky Mountain Rocket SB-5-C-2C-B55