Joseph Bissonette relocated to LaBonte Creek in 1854, just weeks before the Grattan Fight ignited the First Sioux War. Raided twice and stripped of trade by military restrictions, his least successful post reveals how quickly the North Platte’s independent trading era collapsed.

In 1841, the obscure firm of Lock and Randolph built a log post near Fort Adams on the North Platte, the smallest player in a crowded market. Known mainly from a note about borrowed axes, the venture failed, followed by bankruptcy at Fort Vasquez.

In 1834, Antonio Montero built a remote trading post for Crow trade deep in Powder River country. Isolated, harassed by Blackfeet raiders and rival trappers, and undone by a ruinous winter in 1836-37, the Portuguese Houses remain remarkably undisturbed beneath a Johnson County hayfield.

Seth Ward and William Guerrier built Sand Point Post at Register Cliff, the first stop west of Fort Laramie, where they pioneered livestock exchange and open-range wintering that launched Wyoming’s cattle industry. It operated for sixteen years, doubling as mail and Pony Express station.

After the Grattan Fight forced Platte River traders to Fort Laramie in 1855, Seth Ward and William Guerrier built a trading post just across the river. Ward became the fort’s sutler in 1857, anchoring one of the corridor’s most successful trading partnerships until 1863.

Less than three years after French painter Louis Daguerre shared with the world how to make pictures on polished sheets of silver-plated copper, Lt. John C. Fremont attempted to photograph the land we think of as Wyoming. The early photographers of Wyoming adapted new technology to rough terrain and unforgiving elements.

From 1850 to 1854, fur trader and interpreter Joseph Bissonette ran an independent trading post on the North Platte River, serving emigrants and Lakota bands alike. He later worked as a ferryman, bridge partner, and government official through the Oregon Trail’s final violent years.

Fur trader Joseph Bissonette built a bustling trading post at the mouth of Deer Creek in 1857—a crossroads of commerce, diplomacy and scandal that hosted Lutheran missionaries, Pony Express riders and a wary military garrison before Indian wars reduced it to ashes in 1865.

In 1852, Charles Lajeunesse built a trading post at Devil’s Gate, funneling all Sweetwater Valley emigrant traffic past his door. Abandoned by 1856, its ruins sheltered the stranded Martin Handcart Company that winter. Lost for a century, the site was rediscovered and rebuilt in 2001.

Along the Sweetwater River near Independence Rock, Archambault’s Post traded with emigrants and Native peoples through the 1850s, its history tangled with the neighboring Seminoe’s Post. Abandoned by 1856, it briefly sheltered Mormon handcart emigrants stranded that fall in a killing snowstorm.