In 1990 the CPNB (the Association for the Promotion of Dutch Books) asked Annie and Fiep to make the gift book for the Children’s Book Week which they organize. It was to be their last project together.

Initially Annie wanted to make a comic strip with the illustrations integrated into the text, but 
eventually Fiep and Annie decided to follow the well-tried pattern of a story with illustrations. Jorrie en Snorrie is about a train, a special celebration train, which almost becomes the target of terrorist activities. Thanks to the little girl Jorrie and the train conductor Snorrie everything turns out all right, after a day of wild adventures.

While drawing the train, Fiep was confronted with the same problems she had always had with technical subjects. To find out more about trains, she visited the Railway Museum in Utrecht. ‘I looked at all kinds of trains there, but I didn’t like any of them. These days trains don’t have wheels with spokes any more, and those are what I like to draw’. ‘Do you know 
what we’ll do?’, said Annie, ‘we’ll make it a celebration train. Then you can draw wheels with spokes’. And that is just what we did, said Fiep in an interview. However, she was not at all satisfied with the book, mainly because of the quality of the printing and the paper. She thought the drawings, which were very detailed and drawn in thin lines, had been printed with much too much ink, so that their subtlety was lost. ‘If you were Fiep, you would be miserable too. There wasn’t much the CPNB could do to ruin Annie’s texts, but my illustrations came 
out as splodgy messes,’ Fiep told a journalist.