Black and white photograph of Robert Merrill and his wife, Lena Billington Merrill, standing in front of a window and brick wall with J. Walker.

Black and white photograph of Little Falls, New York. A river is visible on the right side of the image with a man walking on a dirt road next to the river.

Black and white photograph of a hydraulic lock in Little Falls, New York.

Black and white photograph of a person standing on a hill of mining spoil in front of several buildings and a smokestack in Little Falls, New York.

Black and white photograph of a man standing next to a rock wall, or "knob," in Little Falls, New York.

Black and white photograph of a rock cliff face.

Black and white photograph of a partially frozen river in the middle of a city. Buildings are visible on both sides of the river, and there is a bridge across the river in the distance.

Black and white close-up photograph of a brook near Lake Otsego, New York. Flat slabs of marcellus shale line the bed of the brook.

Black and white photograph of a small mountain in Otsego County, New York. Rock outcroppings jut out from the grassy hillside.

Black and white photograph of a hillside covered with field grass and shrubs in Otsego County, New York. Shale outcroppings jut out from the hillside, partially obscured by foliage.

Black and white photograph of fields and hills from above, taken in Otsego County, New York.

Black and white photograph of a hilly countryside in Otsego County, New York with mountains visible in the distance.

Black and white photograph of a hilly countryside in Otsego County, New York, with mountains visible in the distance. The image is somewhat clouded by mist.

Black and white photograph of a field of grass in front of a hill partially covered by trees in Otsego County, New York.

Black and white photograph of a hillside farm in Otsego County, New York overlooking several farms and fields in front of a lake in a mountain valley.

Black and white photograph of a hilly countryside with fields and trees in Otsego County, New York.

Black and white photograph of several fenced in fields in front of a lakeside town in Otsego County, New York. A mountain is visible across the lake from the town.

Black and white photograph of a Summit lake in Otsego County, New York. A house is visible on the opposite shore from the camera.

Black and white photograph of hilly countryside in Otsego County, New York, with a farmhouse and barn in the distance.

Black and white photograph of a hilly countryside of fields intersected by lines of trees in Otsego County, New York.

Black and white photograph of a Sunset Hill in Otsego County, New York. The mountain is partially covered by a forest.

Black and white photograph of a field in front of a hill in Otsego County, New York.

Black and white photograph of a man standing atop a drumlin, or hill formed of rock debris. Likely taken near Clinton, New York.

Black and white photograph of a countryside of fields with a small forest in the distance, likely taken near Clinton, New York.