R47 UE S5

Scope and Contents From the Collection: The Contract Books Collection is a series of approximately 400 discrete volumes (and numerous duplicates) depicting the construction, modification, modernization, and rehabilitation of routes, stations, and rail facilities built and operated by the IRT, BMT, and IND systems. Contracts document the lifespans of the New York City subway system’s various routes, from their original construction under the Dual Contracts Era and numerous platform extensions effected mid-century, to installation...