This book was on a suggested reading list for my 3rd grader in the adventure genre; I checked it out to read to my kids, but ran out of time so read it myself. I would recommend an "abridged" version for my kids. There are several intertwined plots that well-written with a focus on good values. One of the plots is a 50-mile ice skating trip taken by 6 older boys. In this part of the tale, the author weaves in a LOT of Dutch facts and history. She does a skillful job, but even this reader with pure Dutch ancestry found these sections a bit tiresome after a while. While her knowledge and descriptions are remarkable, especially since she had not traveled to the Netherlands prior to writing this book, the style is dated. The main narratives, however, are charming and work themselves out memorably.