Map of Chicago, showing original subdivisions, 1830 to 1843 /prepared by Homer Hoyt from ante-fire plats of the Chicago Title and Trust Company.
Scale approximately 1:175,300; Master and use copy. Digital master created according to Benchmark for Faithful Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.
University of Chicago. Social Science Research Committee