I know that the Lewis County Historical Society is located in Gould Mansion, which is across the street from the old Gould Paper Company in Lyons Falls, NY. I would expect they have records of Gould Paper Company. My wife's great grandfather worked at Gould Paper Company around 1900. I worked at the same paper mill (different owner) around 1990.
Lewis County Historical Society/Gould Mansion
Lyons Falls, NY 13368
Phone 1 (315) 348-8089