The author Mies Bouhuys was on the editorial staff of the women’s page of Het Parool at an early stage. When Annie M.G. Schmidt and Fiep Westendorp stopped the weekly adventures of Jip and Janneke on the children’s page of Het Parool in 1957, Wim Hora Adema, editor of the women’s page, asked Mies Bouhuys if she would like to fill the empty space. From 1958 to 1968 Mies Bouhuys wrote a weekly story or a poem about the cats Pim and Pom with 
illustrations by Fiep. When the entire editorial staff of the women’s page resigned in 1968 because Wim Hora Adema had been dismissed from her job, the GPD newspaper group asked Mies and Fiep to continue the adventures of Pim and Pom for them, which they did until 1971.

After Fiep had made colour illustrations of Jip and Janneke for the children’s magazine Bobo, she suggested doing Pim and Pom in colour as well. In 1981 a series of new and old stories about Pim and Pom appeared, with wonderful colour illustrations. In 1982 these stories with colour illustrations were published by Querido in a volume called Tijd voor kattekwaad.