January 21, 1850 | Contract
Claudius Crozet offers the Board of Public Works his assessment of the bids for one section of the Tunnel project.
April 2, 1852 | Contract
Contractors on the Blue Ridge Railroad and Tunnel project filled out elaborate and detailed descriptions of work that they were to complete.
June 5, 1852 | Contract
Contractors on the Blue Ridge Railroad and Tunnel project filled out elaborate and detailed descriptions of work that they were to complete.
December 23, 1853 | Contract
In December 1853, George A. Farrow and David Hansbrough signed a contract with the Blue Ridge Railroad to provide fifty slaves to assist in the construction of the Blue Ridge railroad tunnel.
February 1, 1855 | Contract
In this February 1, 1855 contract between the Illinois Central Railroad and Allan Pinkerton's Detective Agency, Pinkerton & Company agree to establish a "Police Agency" in Chicago to assist the Railroad in the "prompt and efficient performance of their business."