Most Popular Books
- The High Alleghenies: the Drama and Heritage of Three Centuries
- Address to the American Scientific Association, August 20th, 1873, on American Science, and Modern Methods of Science.
- DuPont's Artesian Well, Louisville, Kentucky: Report, Analysis, and Medical Properties of Its Water, with Remarks Upon the Nature of Artesian Wells.
- Potomac Naturalist
- The Blackwater Country
