Josef Lada's illustrations for the World War I novel "The Good Soldier Švejk" are collected here. Over 50 illustrations are featured which is "less than one third of the line drawings supplied by Lada."
Also, be sure to check out the blog that these illustrations were scanned for, BibliOdyssey, which collects vintage book illustrations.
update 08.03.08- I just realized I've had a 1926 edition of this book in German for the past several years! Thank you, Strand dollar rack!