By examining newspaper articles from two different timeperiods in a public library’s life, specifically the main citylibrary of Gothenburg 1964-68 and 2004-2015, thismaster’s thesis studies the discourse of library practice aswell as its societal role during the building and re-buildingof the library. The empirical material is examined byapplying the discourse theory and method of ErnestoLaclau and Chantal Mouffe. With this methodology wealso aim to analyze how the power is distributed betweenthe different roles that emerge depending on in what waythey speak about or is being spoken of in the material.In the analysis of the material, we have identified severalmore or less dominant discourses that construct certain,and often contradictory, views on the city library’s practiceand role in society. The major discourses that emergedin the material during the 1960’s were the book discourseand the cultural centre discourse. The book discoursepromotes traditional and authoritarian views of themediation and conservation of printed, quality books aswell as being associated with strong ideals of enlightenmentand education. The culture centre discoursepromotes a wide library practice, entailing many differentcultural and political activities as well as a wide range ofpeople. The book discourse can be seen all the waythrough the 2000’s, but the later period is dominated bythe information mediation discourse that places the userand its needs at the core of the library’s mission.