Hun illustrerte sin første bok i 1977: Det fremmede barnet av E.T.A. Hoffmann, og har siden illustrert en rekke klassiske forfattere: brødrene Grimm, H.C. Andersen, Lewis Carroll, Oscar Wilde, Edith Nesbit, Charles Dickens, Æsop, Clement C. Moore, Lyman Frank Baum, Bibelen og Rudyard Kipling.
|I feel that the old stories have fantasy and imagination, and to me the new stories that I have come across are more educational and I don’t really like all that. The ones I have come across are about how to win a friend or how to clean your teeth, things like that. [...] Re-presenting the classics means offering surprise and comfort all at the same time — originality and tradition. The difficult thing is you don’t want to disappoint people by making up totally new creatures that nobody could relate to. As with other stories that are very famous, I just concentrate on the text and try to come up not with the very first idea that pops into the head, because that’s often a cliché. I just try and entertainment myself that way and also entertain other people.|
|– Lisbeth Zwerger|
Boken The Art of Lisbeth Zwerger utkom i New York i 1993.