This photograph shows a 3-D model of the substrata under the Susquehanna River. The Model was made by N. Grier Parke, who was the mining engineer for the Lehigh Valley Coal Company.
This stereograph shows the image of the Old Smith Coal Opening in Plymouth, Pennsylvania. The back of the stereograph had writing on the back of it that advertised the picturesque scenery of northeastern Pennsylvania.
This image is a postcard is located in the Postcard Collection at Bishop Memorial Library. The postcard depicts a scene showing the coal mines in the Anthracite Region of northeastern Pennsylvania.
This photograph is an image depicting the inside of an identified mine. Unfortunately, the area of where the mine is located and the photographer are unknown.