
"Report of Progress, Part 5" presents a detailed overview of the geological survey conducted in Pennsylvania, circa 1875. Authored by the Geological Survey of Pennsylvania, this report offers insights into the region's geological formations, mineral resources, and natural...

"Report of Progress, Part 5" documents the ongoing geological survey of Pennsylvania. Authored by the Pennsylvania Board of Commissioners for the Second Geological Survey, this report details the progress made in understanding the state's geological formations, mineral resources,...

"Report of Progress, Part 5" offers a detailed account of the geological survey conducted in Pennsylvania during the late 19th century. Authored by the Pennsylvania Board of Commissioners for the Second Geological Survey and the Geological Survey of Pennsylvania, this report...