Geological Survey: Notes on Radium-Bearing Minerals (Classic Reprint)

Notes on Geological Map-Reading (Classic Reprint)

Geological Notes on Oil Structures (Classic Reprint)

Economic Geological Survey (Classic Reprint)

Geological and Archaeological Notes on Orangia (Classic Reprint)

Annual Report on the Geological Survey of Pennsylvania (Classic Reprint)

Notes on the Rocks and Minerals of Michigan (Classic Reprint)