The Atlas linguistique de la France is an influential dialect atlas of Romance varieties in France published in 13 volumes between 1902 and 1910 by Jules Gilliéron and Edmond Edmont. Whereas Georg Wenker had used postal questionnaires to compile his pioneering Sprachatlas des deutschen Reichs in 1888, Gilliéron employed a fieldworker, Edmond Edmont. Between 1896 and 1900, Edmont conducted 700 interviews at 639 locations throughout the countryside of France, southern Belgium, western Switzerland, the Channel Islands, and the Aosta Valley and the Occitan Valleys of Piedmont in Italy, using a questionnaire of over 1,500 items devised and continually revised by Gilliéron. The results were collated and analysed by Gilliéron and his assistants.