- The Geology of Centre County
- Report of the Geology of the Four Counties Union, Snyder, Mifflin and Juniata
- The Geology of Centre County, Vol. 2: Second Geological Survey of Pennsylvania (Classic Reprint)
- The Geology of the South Mountain Belt of Berks County: Vol. II Part 1
- The Geology of the South Mountain Belt of Berks County: Vol. II Part 1