Expeditions & surveys; Railroad surveys; Rocky Mountains; Lewis and Clark National Historic Trail
Drawing depicts a view of the Rocky Mountains, looking westward. Point (a) marks the Lewis and Clark Trail, and point (b) marks Heart Mountain. Plate LXIII.
"Fort Owen is situated on the Scattering creek of the Lewis and Clark Trail." Drawing depicts Lieutenant Mullan arriving at Fort Owen with a delegation of chiefs from the Flathead nation. Plate XXX.