University of Chicago. Social Science Research CommitteeScale approximately 1:1,000,000; Master and use copy. Digital master created according to Benchmark for Faithful Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.JPEGhttps://www.lib.uchicago.edu/ark:/61001/b2k86bv2x025engPublicMetropolitan region of Chicago, per cent of population white of native parentage, by townships, 1930 :by sectors and zones in Chicago /map prepared by Richard O. Lang.MapsIllinois--ChicagoIllinois1930University of Chicago