Found:


Gould's swamp, looking south

Saul Davis, c. 1883 - in or before 1887

Ingersoll drill Co's compressor…

C.V.V. Powers, c. 1883 - in or before 1887

Headhouse shaft No. 25

C.V.V. Powers, c. 1883 - in or before 1887

Ardsley gate house, section no. 7

P. de Luze, c. 1883 - in or before 1887

Excavating shaft No. 26

George P. Hall & Son, c. 1883 - in or before 1887

Driving a heading

Saul Davis, c. 1883 - in or before 1887

Sleepy Hollow Highway Bridge and…

P. de Luze, c. 1883 - in or before 1887

Turning the arch

George P. Hall & Son, c. 1883 - in or before 1887

Shaft no 25, and blowoff drift

C.V.V. Powers, c. 1883 - in or before 1887

Shaft no 22

George P. Hall & Son, c. 1883 - in or before 1887

Driving the heading shaft no 23

Preston K. Yates, c. 1883 - in or before 1887

South Yonkers Gate House looking…

Preston K. Yates, c. 1883 - in or before 1887