In 2007, Matt Novak, a collector self-defined as a retro-futurist, created the blog Paleo-Future, a look into the future that never was. Since then, Novak has published nearly 700 posts on inventions, ideas, and speculations from the past that looked towards the future.
The blog collects hundreds of resources: articles, books, videos, commercials, post-cards, comics… And all of them are well classified and tagged. Paleo-Future is an interesting (and often hilarious) document that allows to see how social futuristic expectations -in particular, in terms of science and technology- have evolved since 1870 to the 90’s decade of the last century. Highly recommended!