Departed Fort Clatsop, ascending Columbia River — John Ordway: April 1, 1806

5 or 6 miles up Quick Sand River to make discovries & Several
hunters went up the Seal River a hunting & others went out in
different directions a hunting, a number of the natives visited
us as they were passing down the River late in the afternoon
Serg1 Pryor returned had been about 4 miles up quick sand
River found the current rapid & only about 4 feet deep, he
killed one deer, the other hunter returned had killed 4 Elk
and 2 deer and an otter the hunters tells us that the country
back from the River is rich land Some praries and rich plains
&C. a number of Savages passing down the River in their
canoes, we discovred yesterday the top of a high white Mountain
some distance to the Southward our officers name it Mount
Jefferson. 2 canoe loads of Savages Camped near us.