----------------------------Original message---------------------------- Not knowing what sources you have tried for L. Wuhrer (Paris, 1870s cartographer) it would not come amiss here to suggest (or repeat) the following bio-bibliographic guide:- How to identify a mapmaker: an international bibliographic guide [...]=Comment identifier un cartographe: guide bibliographique international[...] / edited by Monique Pelletier. - Paris: Comite Francais de Cartographie; [Tring, Herts: sold also by Map Collector Publications] for International Cartographic Association, 1996. - [ii]leaves,82p.; 30 cm. - The contribution for France is on pages 39 to 42, and includes a mention of 'Information on cartographers in database': "BN-OPALINE database on maps elaborated [!] by the Map Division of the Bibliotheque Nationale de France with the cooperation of the Service historique de l'Armee de Terre [...]" (including 20th-century mapmakers) Perhaps you would let MAPS-L subscribers know how you get on? Or perhaps not... Sincerely Francis Herbert (Curator of Maps, RGS, London) [log in to unmask]