Frémont became known as the "Pathfinder to the West", after James Fenimore Cooper's novel, "the Pathfinder" Jessie, intensely interested in the details of his expedition, became his recorder, making notes as he described his experiences. Adding human-interest touches to these printed reports, she wrote and edited best-selling stories of the adventures Frémont had while exploring the West with his scout, Kit Carson. Thus, she involved herself in her most happy life's work, interpreting her husband and his actions for a public eager for information about the opening of the West. Written during a time when the concept of Manifest Destiny was becoming increasingly popular, these narratives were received with great enthusiasm.