He wrote approximately 60 books , among them many books for children , and is best known for '' De Scheepsjongens van Bontekoe '' ( 1924 ) , which was reprinted 28 times as of 2003 .
He wrote approximately 60 books , among them many books for children . 
 He is well known for writing the historical children 's book '' '' De Scheepsjongens van Bontekoe '' '' ( 1923 ) , which was reprinted 28 times as of 2003 .