Keywords: IllinoisTunnelShaft7.jpg en Original Captions Western Fig 10 Elevator House to lift the excavated clay that it may be dumped into wagons to be hauled away to the Lake Front ; Page's Fig 6 ELEVATOR HOUSE Used for lifting the excavated clay so that it may be dumped into waggons to be hauled away to the Lake Front ; Mines Fig 9 Elevator house Additional inscription on the margin of the photo as shown in Western and Mines 9-15-02 Illinois Telephone Telegraph Co Filling Wagons at Shaft No 7 This image is a composite of all three published versions in order to eliminate printing and scanning artifacts The table of construction shafts in Western page 481 shows Shaft 7 at the corner of State Street and Eldridge Court now 9th Street The http //sanborn umi com/il/1790/dateid-000018 htm CCSI 2802n 1906 Sanborn Map of Chicago sheet 83s shows the shaft on the south side of Eldridge just east of State George W Jackson Scope Extent and Construction of the Underground Conduits of the Illinois Telephone and Telegraph Co in Chicago http //books google com/books id DJ4PAQAAIAAJ pg PA489 Journal of the Western Society of Engineers Vol VII No 5 Oct 1902 ; page 489 George W Jackson Tunnel Construction in Chicago -- Method of Driving and Constructing So As Not To Disturb the Surface http //books google com/books id 5JrmAAAAMAAJ pg PA251 Mines and Minerals Vol XXIII No 6 Jan 1903 ; page 251 George W Jackson Underground Conduits in Chicago http //books google com/books id jz4AAAAAMAAJ pg PA322 Page's Magazine Vol II No 4 Apr 1903 ; page 322 George W Jackson died 1922 Date first published 1902-10 Created 1902-09-15 41 52 14 04 N 87 37 38 38 W region US_heading SSE Chicago Tunnel Company 1902 in Chicago Winding towers in the United States Elevators in the United States Horse-drawn wagons in the United States Transport of bulk freight PD-old |