Mayer, Harold M. (Harold Melvin), 1916-1994Figure 3. Also appeared in author's Ph. D. dissertation (University of Chicago, 1943): The railway pattern of metropolitan Chicago.; Scale [ca. 1:130,000]; 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/b2mz7z92wv8tengPublicRailroadsPattern of railway facilities in Chicago and vicinity /Harold M. Mayer.MapsIllinois--ChicagoIllinois1943University of Chicago