Regrouping of services and cultural facilities to include a municipal library have been borne on the wave of development in cultural policies. They are fed by a certain conception of culture as a world in its own right. This phenomenon is most noticeable in small communes. A number of examples quoted in this article draw up a picture of the typology of the perceptions of the role of the Municipal Library. The author also poses questions relating to choice, objectives and the future prospects for these regroupings.