The aim of this thesis is to investigate the reason behind thedecision to open libraries at subway stations in Stockholm.The theoretical framework for the study is Douglas Raber´s threeideologies, social activism, conservative response and populistinitiative. The study includes interviews with librarians and apolitician responsible for the service and documents with plansfor the Public Libraries development during the period. Theempirical material was examined with an idea- and ideologicalanalysis.The conclusion is that the concept of the subway libraries consistsof a combination of the three ideologies but the most evidentare those of populist initiative and social activism.The reason for opening libraries at subway stations is to makethe libraries more easily accessible, to attract new visitors and tomake the Public Libraries service more visible. These smalllibraries have a function as a market place for the Public Librariesand as a meeting place in the city. / Program: Bibliotekarie