[Willoughby St at Flatbush Avenue Extension, BMT Broadway Line, Brooklyn, NY]

Willoughby Street at Flatbush Avenue Extension, Brooklyn, NY. Survey photograph of street conditions during construction of the BMT Broadway line. Eastward view of piles of cobblestones and a trench along the side of the road. View of two passing trolleys. The Prison Ship Martyrs Monument in Fort Greene Park is visible in the distance, and the Department of Health building is visible on the southeast corner of the street.