* James Fenimore Cooper: His novels, especially the *Leatherstocking Tales*, featuring Natty Bumppo (also known as Hawkeye), romanticized the frontier and idealized the "noble savage" archetype. These stories captured the imagination of many, painting a picture of the West as a land of adventure and opportunity.
* Francis Parkman: This historian wrote detailed accounts of the fur trade and the conflicts between European powers and Native Americans in the West. While not directly advocating for settlement, his works provided valuable insights into the geography, culture, and history of the region, informing potential settlers about the challenges and complexities they might face.
* John C. Frémont: An explorer and military officer, Frémont published accounts of his expeditions through the West, which provided valuable information on the terrain, resources, and Native American tribes. These accounts served as practical guides for settlers, offering insights into the challenges of westward expansion.
* George Catlin: This artist and writer documented the lives and cultures of Native American tribes across the West, producing paintings and writings that captured the beauty and diversity of indigenous life. His works, while often romanticized, provided a glimpse into the cultures that were being displaced by westward expansion.
* Horace Greeley: A prominent journalist and founder of the New York Tribune, Greeley championed westward expansion and published articles and editorials urging Americans to "Go West, young man." His writings, while not strictly guides, encouraged westward migration and promoted the idea of the West as a land of opportunity.
These are just a few examples of the many authors who contributed to the growing interest in the American West. Their works, both factual and fictional, played a significant role in shaping public perception and influencing westward migration.