- E-bookThe Exploring Expedition to the Rocky Mountains, Oregon and CaliforniaJohn Charles Frémont
- E-bookThe Exploring Expedition to the Rocky Mountains, Oregon and California To which is Added a Description of the Physical Geography of California, with Recent Notices of the Gold Region from the Latest and Most Authentic SourcesJohn Charles Frémont
- E-bookThe Exploring Expedition to the Rocky Mountains, Oregon and CaliforniaJohn Charles Frémont