I may already have posted about this site, months ago, but I can't remember! Don't get old folks!
In any case, even if I have, it's worth another look; Wink Books: Remarkable Books that Belong on Paper, or Wink, is a delicious, crunchy look at book both as object and as medium for conveying information. They focus on visually and intellectually challenging material. Choose a book, and click on it, and you will get a tantalizing sampling of the interior.
It subdivides books into logical categories; Maps and Atlases, Art and Design, Graphic Novels, Cookbooks like;
A section called "Outronic" features things that may not quite fit some of the other categories, like a reprint of Ernst Haeckel's "Art Forms in Nature".
"Art Out of Time: Unknown Comics Visionaries. 1900-1969" by Dan Nadel;
The first book on the front page is currently "Wreck This Journal" by Keri Smith. It's a series of seemingly random exercises and instructions for activities, including; tongue painting;