Scale 1:600. 50 ft. to 1 in. Additional title on some sheets: North Chicago. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire insurance map hand colored to show building construction, locations of windows and doors, elevators, and available water facilities. Partial cadastral map. Unnumbered sheet 1 includes symbol key, index, and index map. 21 maps, colored 64 x 54 cm