- An American in Iceland: An Account of Its Scenery, People and History; With a Description of Its Millennial Celebration in August, 1874; With Notes on the Orkney, Shetland, and Faroe Islands, and the
- The Subsidence Theory Of Earthquakes .....
- The Philippine Islands: Their Physical Characters, Customs Of The People, Products, Etc. Earthquake Phenomena And Savage Tribes...
- The Wonders of the Yosemite Valley, and of California
- The Natural History of the Human Species: Its Typical Forms, Primeval Distribution, Filiations, and Migrations