July 18, 1804
The Expedition continues up the Missouri River. Along the way, they offer some meat to a starving Indian dog. As with most days, two hunters travel the distance on horseback. After 18 miles, they all camp below present Nebraska City.
an annuel plant puting up many branches from the root has a leaf like the pateridge bea[n], is jointed bears a number of yllow pea-like flowers which grow on the seed stems which project from the main branches and which are unattended with leaves; these flowers grow all arround this stem and give it the appearance of a tausell. the [l]eaf stems ar long and have 24 par of leaves.1
July 18, 1805
Clark, J. Fields, Potts, and York set out ahead of the boats in order to find the Shoshone. They find an Indian trail and see several Bighorn sheep. Lewis brings the canoes 21 miles up the Missouri River to Eagle rock at modern Holter Lake.
a fine morning passed a Considerable river which falls in on the Stard Side and nearly as wide as the Missouri
this handsome bold and clear stream we named in honour of the Secretary of war calling it Dearborn's river.—
July 18, 1806
Lewis crosses the plains to reach the Marias River near present Tiber dam. Clark continues down the Yellowstone River in Stillwater county. Ordway is plagued by black flies and Gass finds tobacco in a cache below the Great Falls.
6 ms. from its junction with Maria's river where we found some cottonwood timber; here we halted to dine and graize our horses. the bed of this creek is about 25 yds. wide at this place but is nearly dry at present, the water being confined to little pools in the deeper parts of it's bed. from hence downwards there is a considerable quantity of timber in it's bottom.