 Other short-lived forts were established by Henry on his earlier expedition with the Missouri Fur Company.In the spring of 1810, the first Fort Henry was built at the Three Forks of the Missouri River near-present day Three Forks, Montana, but was abandoned shortly thereafter.A second Fort Henry was established during the fall of 1810 on Henry's Fork of the Snake River in present-day southeastern Idaho; it was abandoned in 1811.