""Symbol legends on key map leaves." Map leaves in volume 2 numbered 201-291; title page, key map, and street index on 3 unnumbered leaves. Volume 2 includes Rockdale and shows the area east of the Des Plaines River that is south of 4th Avenue and the area west of the Des Plaines River. Map leaves in volume 1 numbered 1-81; title page, key map, street index, and ""Map of congested district of Joliet, Ill"" on 4 unnumbered leaves. Volume 1 includes ""part of Lockport and Joliet townships"" and shows the area east of the Des Plaines River and north of 4th Avenue. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Partial cadastral map. "Fire insurance map colored to show building construction, locations of windows and doors, elevators, and available water facilities."" 71 cm
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