A friend of mine introduced this site to me. It’s a database for information graphics that Parsons Institute for Information Mapping (PIIM) is building. They are accepting submissions so if you have interesting graphical display, take a shot to be in the “most comprehensive, manually annotated (and taxonomically classified) information graphics database in the world” which they are aiming for. I was not able to pull out 1200 graphics, but there are displays that I’ve never seen before. A list of key words might be helpful.
It seems a big buggy at the moment. A search for "plot" revealed a number of mislabelled graphs.