This slim advertising pamphlet from the Swans Down company is one of my favorites. The graphics are fantastic, as are the recipes which cover a range of altitudes from 3,000 to 7,000 feet. Published in 1955, all of the classic cakes of the day are represented, from Devil's Food and Front Cake to Angel Food and Wonder Cake. There's also a trove of recipes for fillings and frostings such as Sugarplum (Seven Minute Frosting with Prunes), Sea Foam (Seven Minute with brown sugar instead of corn syrup), and Clever Judy (an uncooked egg-based chocolate frosting).