Plenty of people collect Disneyana, the toys, books, animation cels, and theme-park souvenirs. Then there are those fans who collect information and details on the Disney parks themselves, collecting official park maps or drawing up their own ride blueprints, assembling the design history behind the attractions, and even collecting vintage tickets and ticket books. Yesterland (previously: 1, 2, 3) is an ever-growing collection of Disneyland history, and has an updated collection of links to similar fan sites and Imagineering blogs, which is a whole collection of rabbit holes of nostalgia and behind-the-scense information. So grab a riding crop and pretend like it's the 60s all over again!
The amazing products and lifestyles that would be at your fingertips if you lived 50 years ago and had a magazine subscription.
Dan Goodsell (of the unbelieveably great - and previously linked - Tick Tock Toys) has been keeping a blog for the last six months or so covering a variety of subjects (including his webcartoon, Mr Toast), but largely focused on U.S. pop culture ephemera of the 50's though the 70's, with a ton of great stuff.