On the subject of Boîte-en-Valise...

Not strictly an artist's book, but something that sort of toes the line between book and sculpture. An interesting feat no matter what it is, really. Also, according to this site, some of Duchamp's Boîtes-en-Valise were put together by Iliazd!

Some interesting information on bindings, mostly covering the nineteenth century.

Some interesting information about the design of Penguin Books over the years. Tschichold worked for them as art director for a few years.

Website that lets you look at lots of contemporary book covers. You can browse by title, author, designer, or even typeface used.

New York firm that designs books, but also, interestingly enough, logos for restaurants and food packaging. Sort of a bizarre mixture; it's fun to see how they work alongside one another.