Louise Smit is a prolific writer of children's books. She published more than 22 books. Many of them are based on the characters of her television programmes. Her books are best sellers and the early Haas Das books are now collector's pieces. She also wrote The Bible for Children in 1982 and 2002 a new edition of The Bible for Children appeared. A new book Professor Fossi en die Dinosourusse was published in 2004. On public demand she wrote two new Haas Das books: Haas Das se Nuuskas (2006) and Haas Das raak weg (2007).

Early Haas Das books above (only a few shown) and illustrated by Butch Stolz.

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Sarel Seemonster, Karel Kraai and Die Kouse are all living happily in the Wielie Walie Park, near the Walie Mountains. Bennie Boekwurm, Bytjie and Blommetjies also live there, and Bennie is, as always, reading stories to his friends - he is a clever worm and has many storybooks in his Book tunnel. One fine day, a strange character appears in the Wielie Walie Park - his name is Wagga Wagga Kwag. Sarel and his friends immediately like him and they agree that he should stay and become their new friend.