Chicago Subway System Built by the Illinois Tunnel Company

This book consists of images and maps detailing the construction of the freight tunnels. A statement on page 5 written by the General Manager and Chief Engineer of the Illinois Tunnel Company, George W. Jackson, refers to "misleading, malicious and vicious reports" about the construction of the tunnels. Jackson states "No deaths have occurred that can be attributed to tunnel construction, and not one employee has been disabled to such an extent as to prevent him from following his usual vocation."

Drawing of Basement Level of Heyworth Building

Chicago Subway System Built by the Illinois Tunnel Company, Built Without Accident and No Claims for Damages.  Chicago, IL: Illinois Tunnel Company, Chicago. 1919. Crerar TF851.C4I5

Caption: "plan of subway at center of Madison Street, and by-pass leading into Heyworth Building.  The excavation from this building was transported by the Tunnel Company"

Photograph of "Typical basement storeroom connecting with shaft to tunnel"

From: Chicago Subway System Built by the Illinois Tunnel Company, Built Without Accident and No Claims for Damages. Chicago, IL: Illinois Tunnel Company, Chicago. 1919. Crerar TF851.C4I5

Caption: "This basement is a building 40 feet wide by 190 feet deep, fully equipped for handling freight from tunnels; showing track and trolley system, with electric locomotive; also conveyor belt for taking coal to boilers in the rear"

Drawings of Subway Tunnel

From: Chicago Subway System Built by the Illinois Tunnel Company, Built Without Accident and No Claims for Damages. Chicago, IL: Illinois Tunnel Company, Chicago. 1919. Crerar TF851.C4I5

Caption: "Steel ribs and lagging used in forming concrete for the 12-foot by 13-foot construction"

Drawings of Subway Tunnel

From: Chicago Subway System Built by the Illinois Tunnel Company, Built Without Accident and No Claims for Damages. Chicago, IL: Illinois Tunnel Company, Chicago. 1919. Crerar TF851.C4I5

Caption: "End and side view showing car dimension, location of trolley wire; also telephone cables in tunnel"