I'm relatively new here, so I don't know if this has come up on any previous posts, but I recently came across a website:
www.wishbookweb.com The guy running the site has donwloaded entire Christmas catalogues from the usual suspects like Sears and Penneys as well as from a few other chains. Years range from 1940-1986 - not every single year, but some from each decade.
Time-consuming, of course, to download and to browse, but still a fun way to learn about appliances, clothing, dishes, etc. or just to see what the "must-haves" were over the years!
goodaim