Busch: Inventor of the Comic Strip: An online tribute to this German artist and author of nonsense verse, including a good selection of poems, with Busch's original illustrations, translated into English.
Comiclopedia: Wilhelm Busch: Illustrations and biography of the comic strip pioneer.
Hans Huckebein: Illustrated e-text in German and English translation.
Max und Moritz: "This Web edition of Busch's classic children's story incorporates the original illustrations. Source and encoding information are available; as is a discussion forum related to Max und Moritz." Available in both English translation and the original German.