Board of Water Supply. City Water Tunnel No. 1. Geological test borings on southwest corner of Hester Street and Suffolk Street (Seward Park). Showing Pierce Jumping Jack rig. October 11, 1910.

Board of Water Supply. City Water Tunnel No. 1. Geological test borings on southwest corner of Hester Street and Suffolk Street. Showing Davis Calyx shot drill. November 2, 1910.

Board of Water Supply. City Water Tunnel No. 1. Geological test borings on Hester Street, between Suffolk and Clinton Streets. Sheds like this one popped up on the Lower East Side in 1910, housing drill rigs that collected core samples of rock from hundreds of feet under the busy sidewalks. These geological investigations were essential in planning the path of City Water Tunnel No. 1. March 21, 1910.

Crowd gathering after accusation of stealing at the corner of Suffolk and Hester Streets, New York.