This is a c1962 edition of the book.  It is in Very Good condition with flat, sturdy boards, and bright, crisp, and clean pages.  There is a minor tear at the top of the spine, which has been stabilized with archival glue.  Corners are mildly bumped.  There is also an inscription on the 2nd inside page dated 1962.  The book measures approx 8.25 in x 11.25 in.

Petrus Johannes Franciscus Maria Worm, Piet Worm for short, was born in 1909 in Alkmaar, The Netherlands. He studied at the Kunstnijversheidsschool in Haarlem, the School voor Kunst, Techniek en Ambacht in Den Bosch and the Rijksacademie voor Beeldende Kunsten in Amsterdam.

Worm became an illustrator and writer of children's books, often cooperating with writer Bertus Aafjes on titles such as 'Peter-Kersen-eter' (1943, "Dit Werd Gemaakt In Fraaie Vorm, Door Bertus Aafjes en Piet Worm"). They also made an illustrated history of The Netherlands, called 'De Vrolijke Vaderlandse Geschiedenis', published in newspaper De Volkskrant in 1948 and in book format in 1958. 

As described by one mother of a child:

“It is the weirdest story ever, but you gotta love it. Soooo, there are these three horses ~ Blackie, Whitey and Brownie ~ and they were looking to do something exciting... when they happen upon a lonely man who has disguised himself as a tree to make their acquaintance... (stay with me here)... when the three horses decide they would like to visit a town... the man disguises them as three princesses... walking upright and looking rather fancy, they get mistaken for real princesses... thus a comedy of errors ensues.”