The purpose of this study is to analyze and describe how the children’s department in a library has developed until today. The study shall contribute to a deeper understanding of how the view of children within libraries has changed over time and how the libraries work with children and youths today. I will, in my study, describe how the library in Kalmar looked when it comes to their focus on children and how the focus look like today regarding this library. I will also study if there are any similarities or differences when it comes to the growth of Kalmar’s children’s department compared to a national development of children’s libraries. The study is done with an institutional theoretical framework with ideal types as a central concept. The method I’m using is qualitative content analysis. The material consists mostly of archive documents in the form of protocols, annual reports, and newspaper clippings regarding the period relevant for my study. The analysis shows that Kalmar’s City Library has undergone a major development regarding the evolution of children’s libraries. A lot of this development is consistent with the national development regarding children’s libraries but there are also some differences in the development on a local level.