The Connecticut Valley Railroad was formed in 1871, extending from Hartford, Connecticut, south to Old Saybrook, Connecticut, along the Connecticut River. The railroad line was reorganized in 1880 to become the Hartford & Connecticut Valley Railroad, and leased by the New York, New Haven & Hartford Railroad in 1887 to become the Valley Division of that line. The collection consists of shipping documents of freight shipped out of the North Haven, Connecticut, freight yard; real estate records of properties in Middletown, Connecticut; photographic negatives of train wrecks in the New Haven, Connecticut, area; and other papers. Items donated in 2021 include albums of photographic prints of scenes along the Connecticut Valley Railroad and its successors and of the Valley Railroad heritage rail line in Essex, Connecticut; photographic negatives; and historical documents related to the railroads associated with the Connecticut Valley Railroad.