Roy Fielding includes the design of REST web services in his PhD dissertation for UC Irvine. It will lay dormant for a few years, but eventually pick up some steam, and ultimately become the dominant method for creating open APIs.
I took the best posts from The History of the Web, over sixty of them, and compiled them into a single volume. So now you can read about the web's history wherever you go.
Early computers faced unexpected failures, and that gave us graceful degradation. But on the web, we needed something different. We needed progressive enhancement.