Series IV: Architectural Documents

Series IV consists of architectural and engineering documents related to Paine's work as a civil engineer. The Hudson River Tunnel specifications consist of reports related to Paine's consulting work evaluating the progress of tunnel construction and specifications of pneumatic tunneling equipment. Included in these records is a note regarding potential safety issues encountered during tunnel construction.

The engineering notes include information regarding various civil engineering projects, topics and equipment focusing on rapid transit, suspension bridges and cable railways. It also includes calculations and one drawing of a pneumatic tunneling apparatus.