Most Popular Books
- A report on the Cretaceous paleontology of New Jersey; based upon the stratigraphic studies of George N. Knapp Volume 2
- The Clays and Clay Industry of New Jersey
- A Report on the Cretaceous Paleontology of New Jersey; Based Upon the Stratigraphic Studies of George N. Knapp; Volume 2
- The Quaternary Formations of Southern New Jersey
- The Clays and Clay Industry of New Jersey