@book{ Solr-3401672, title = {Census tracts of Chicago, 1934 Doubled-up families.}, series = {Social Science Research Committee maps.}, series = {University of Chicago Digital Preservation Collection.}, editor = {University of Chicago. Social Science Research Committee}, address = {Chicago}, publisher = {Social Science Research Committee, University of Chicago}, year = {1934}, note = {"Map 7."}, note = {"From: Census data of the city of Chicago, 1934"--Lower right margin.}, url = {http://pi.lib.uchicago.edu/1001/maps/ssrc/G4104-C6E73-1934-U52} }