Date: [between 1873 and 1879]
Creator: Gray, Ormando Willis
Description: Map shows counties, township grid, completed railroads, railroads under construction, canals, cities, towns, and post offices. Includes explanation and notes. Inset: "Plan of Cook County & vicinity of Chicago." Scale [ca. 1:1,045,440], [ca. 1:1,260,000], and [ca. 1:1,690,000].
Contributing Partner: University of Texas at Arlington Library