Records of the Chicago and North Western Railway, including abstracts of title for Cook County, Illinois, properties of this company and its predecessor firms, together with personnel records. Also 3 boxes of "North Western Line" quarterly publications, approximately 300 black and white 8x10 prints from the mid 20th century of railroad scenes from Chicago area communities, and scattered annual reports of the C&NW Railroad from 1861-1969.

Meeting minutes and scattered subject files relating to the Master Mechanics Association of the CB&Q. The association was formed to make recommendations to the management about construction, maintenance, and repair of all rail cars, equipment, tools, and rail lines. Forms part of the Chicago, Burlington & Quincy Railroad Company Records.