The poems about Veronica the sheep, the vicar and the Green ladies which Annie M.G. Schmidt wrote for Het Parool were all illustrated by Wim Bijmoer. When Reinold Kuipers of Querido wanted to publish a collection, he ran into serious problems in working with Bijmoer. Kuipers approached Fiep with an urgent request to illustrate the volume of poems. Fiep was unwilling to do this, but was eventually persuaded by Kuipers.

She created her own sheep, but Wim Bijmoer thought she had stolen ‘his’ sheep. Fortunately the two illustrators made up again later; Fiep was very glad about this, because after all they had always been good riends. In retrospect, Fiep thought she should not have let herself be put under so much pressure by Kuipers.

Jip and Janneke modernized
In the 1970s Fiep set out to modernize her Jip and Janneke figures. She thought the very first silhouettes of the two children were terribly old-fashioned, 
with their egg-shaped heads, their lanky arms and legs and droopy clothes; it was all wrong, 
thought Fiep. Over the five years during which the adventures of Jip and Janneke had appeared in Het Parool, the figures had already been gradually changing. Their heads had become rounder and their bodies stockier and more like those of young children. With the patience of a saint, Fiep set out to modernize the figures, with a new approach to their attitudes and shapes. At that point Jip and Janneke came to look as they do today.