Printed legal documents in 40 volumes plus two volumes of indexes, concerning the Illinois Central and its subsidiary companies. Dates in volumes overlap to some extent where legislation, contracts, agreements, etc. previous to IC's interest in road are shown. Volumes 1 and 2 are bound together. A few volumes cover special subjects. Indexes are in volumes 2, 8, 9, 25-30 and 32-40 for each volume, and cumulatively in volumes 4-7 and 12; at beginning of the series are two separate indexes for volumes 1-21, and 22-30. Volume 31 is located on Open Shelf 26 (Railroads) in the Special Collections Reading Room.