Terlouw also wrote 24 children's books, most notably Winter in Wartime (Oorlogswinter, 1972) and How to Become King (Koning van Katoren, 1971), both of which won the Gouden Griffel and have been made into motion pictures directed by Martin Koolhoven.
In 1973 the novel won the Gouden Griffel and in 1975 it was made into a popular television miniseries directed by Aart Staartjes.