I try not to think about how much I would pay for a copy of Hilde Krüger's 1924 children's book Der Widiwondelwald. Some links (in German): one, two, three -- see the full book as smaller images at the last link to the kibook blog.
[Update: this was briefly in print last year -- might still be able to find it.]
I kept coming across this book when working on my Kinderbuch series over the years.
