[Polo Grounds: IND Concourse Line]
Survey negative taken prior to construction and maintenance of the 161st Street Tunnel and IND Concourse Line into the Bronx. Logbook reads: View showing general condition of the portion of the south wall of the Polo Grounds from about halfway between the large concrete pilaster in the center of the south wall and the southwest corner of the Polo Grounds to the southwest corner of the same, before the start of operations in Manhattan Field by the contractor. Camera set up in Manhattan Field 70 feet south of the Polo Grounds and 355 feet west of the east fence line of Manhattan Field looking northwest.