Le Play School, perhaps independently from each other. In fact, the first proven occurrence of the term derives from a review of Reclus' Nouvelle géographie universelle from 1884, written by Paul de Rousiers, a member of the Le Play School. Reclus himself used the expression in several letters, the first one dating from 1895, and in his last work L'Homme et la terre from 1905. The first person to employ the term as part of a publication's title was Edmond Demolins, another member of the Le Play School, whose article Géographie sociale de la France was published in 1896 and 1897. After the death of Reclus as well as the main proponents of Le Play's ideas, and with Émile Durkheim turning away from his early concept of social morphology, Paul Vidal de la Blache, who noted that geography "is a science of places and not a science of men", remained the most influential figure of French geography. One of his students, Camille Vallaux, wrote the two-volume book Géographie sociale, published in 1908 and 1911. Jean Brunhes, one of Vidal's most influential disciples, included a level of (spatial) interactions among groups into his fourfold structure of human geography. Until the Second World War, no more theoretical framework for social geography was developed, though, leading to a concentration on rather descriptive rural and regional geography. However, Vidal's works were influential for the historical Annales School, who also shared the rural bias with the contemporary geographers, and Durkheim's concept of social morphology was later developed and set in connection with social geography by sociologists Marcel Mauss and Maurice Halbwachs. The first person in the Anglo-American tradition to use the term "social geography" was George Wilson Hoke, whose paper The Study of Social Geography was published in 1907, yet there is no indication it had any academic impact. Le Play's work, however, was taken up in Britain by Patrick Geddes and Andrew John Herbertson. Percy M. Roxby, a former student of Herbertson, in 1930 identified social geography as one of human geography's four main branches. By contrast, the American academic geography of that time was dominated by the Berkeley School of Cultural Geography led by Carl O. Sauer, while the spatial distribution of social groups was already studied by the Chicago School of Sociology. Harlan H. Barrows, a geographer at the University of Chicago, nevertheless regarded social geography as one of the three major