I also wanted to share an amazing project that has cataloged and archived materials from the famous architecture movement Archigram. The project is called The Archigram Archival Project by the University of Westminster.
This is an amazing project! I have not seen a project of this scope before. Architectural material is rarely found or organized in this manner.
Also, the images are clear and understandable. While browsing specific projects, it links to related images and gives textual information about specific works. It is also engaging and simplistic in a good way.