“…Lewis's assertion is important not only because it highlights Du Bois's disposition during the time he produced The Philadelphia Negro , but also because it points to the enduring social scientific legacy Du Bois's The Philadelphia Negro was to embody. Recent work on Du Bois's analysis in The Philadelphia Negro has begun to reveal some of the other elements included within this text including the longstanding German influence on Du Bois's sociological imagination (Anderson 1999; Bay 1998; Weger 2009; Young and Deskins, 2001; Zuberi 2004), his pioneering efforts in methods of ethnographic triangulation (Anderson 1999; Morris and Ghazani, 2005; O'Connor 2009) and demography (Bobo 2000; Wortham 2009), analyses of race relations in urban America (Aptheker 2000; Broderick 1974; Hunter 2013; Marable 1986; McKee 1993; Morris 2006; Rudwick 1974; Watts 1983; Wright 2000), and his significant discussion of assimilation patterns of immigrants and migrants (Drake and Cayton, 1945; Wortham 2008). Despite the new insights afforded by recent research, honing in on Du Bois's notion of a “city within a city” affords new insights into the book, and squarely places him and The Philadelphia Negro into a long-standing dialogue and debate regarding urban Black enclaves, spatial inequality, and urban racial relations.…”