Thousands of contracts and agreements, mortgages and miscellaneous historical items in 17 oversize volumes Numerical run vols. 1-10 are roughly chronological, with some overlap between volumes. Alphabetic run vols. A-G are combined contracts of IC and some of their subsidiary lines (Chicago, St. Louis, & New Orleans; Peoria, Decatur & Evansville, etc.). Numbering of individual contracts is sporadic.