Old shelter magazines from the 40s, 50s and 60s, but mostly the 50s, like Better Homes & Gardens, American Home, Good Housekeeping, Ladies Home Urinal and, surprisingly, Saturday Evening Post (which was great for Westinghouse ads) had extensive appliance advertising which could prove very educational to interested boys who lived and breathed appliances. Also, older Consumer Reports and Consumer's Research Bulletin issues have a great deal of product background as well as brand & model specific information.