Josiah Gregg

Born in Overton County, Tennessee, in 1806 and raised largely in Missouri, Josiah Gregg worked as a teacher, studied surveying, and eventually turned to the busy trade routes linking Missouri with Santa Fe. Beginning in the 1830s, he made repeated journeys along the Santa Fe Trail, building deep practical knowledge of frontier commerce, travel, and life in northern Mexico and the Southwest.

Those travels became the basis for Commerce of the Prairies, published in 1844. The book was more than a travel narrative: it offered detailed reporting on trade, geography, cultures, and the everyday realities of overland movement across the plains. Because Gregg wrote from direct experience and paid close attention to what he saw, the work remains one of the most valued firsthand accounts of the early West.

Gregg was also a naturalist with a strong curiosity about plants and landscapes, and later traveled widely in the West during and after the Mexican-American War. He died in California in 1850, but his reputation endured as an observant chronicler of the Santa Fe trade and a writer whose work still helps readers picture a fast-changing frontier.