The Soissons reference collection has been created in the late 1980s, in a region, in which the Early/Middle Nolithic period has been extensively investigated. The current French-German MK-Project has provided the opportunity to update the existing collection and to incorporate the information into a GIS. The database contains 440 rock samples, mainly from the Aisne and Oise drainage systems in the north-eastern part of the Paris basin. Non-systematic sampling has now extended to the entire Paris basin and to neighbouring regions, including data from the Petite Seine, the Marne and the A5 motorway sites, as well as flint from the Jura Mountains, the Lorraine region, Poland, Belgium, Holland, the Rhineland and Hungary. In parallel, a similar databse for clay is under construction. The fisrt results concern the relationships between lithic technology and flint/stone raw materials in the Neolithic. The lithotheque will possibly provide a reference collection for the identification of raw materials in the Paris basin.