In the land of dwarfs

BibliOdyssey mentioned this one way back in 2008 but I keep coming across it and had to feature it. The scans are by flickr user Tomasz and the book is called... W Krainie Karzełków, which Google confidently translates as "In the land of dwarfs." I can't find a date. 1940s? And the sig... Ajo?

Book collector Arthur van Kruining cleared up the mystery: "This book is of Dutch origin. The title is DWERGENLAND (1923). "Ajo" was the pseudonym of Henriëtte Fox-Borel. Unfortunately her books are quite rare." Thanks Arthur!

Google translates "Dwergenland" as "Dwarf Country." See more Ajo here.