April 01, 1806
Meriwether Lewis

we indeavoured to ascertain by what stream the southern portion of the Columbian valley was watered but could obtain no satisfactory information of the natives on this head.

there are no deer Antelope nor Elk on which we can depend for subsistence; their horses are very poor most probably at this season, and if they have no fish their dogs must be in the same situation. under these circumstances there seems to be but a gloomy prospect for subsistence on any terms; ... we are therefore determined to loose as little time as possible in geting to the Chopunnish Village.

I purchased a canoe from an Indian to day for which I gave him six fathoms of wampum beads; he seemed satisfyed with his bargain and departed in another canoe but shortly after returned and canceled the bargain, took his canoe and returned the beads. this is frequently the case in their method of traiding and is deemed fair by them.

April 01, 1806
Patrick Gass

We had a cloudy morning; and we agreed to stay here all day, for the purpose of hunting. So 9 hunters set out early; 3 of whom went up Quicksand river [Sandy River] and killed a deer: the other six killed 4 elk and a deer. In the evening nine of us went to bring in the meat of the elk; but it being late we were obliged to encamp out all night.

April 01, 1806
John Ordway

Sergt. Pryor & three men was Sent 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 Sergt. Pryor returned  had been about 4 miles up quick Sand River found the current rapid & only about 4 feet deep.  he killed on deer.  the other unter 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.[This mountain had been named on March 30th.]  2 canoe loads of Savages Camped near us.

April 01, 1806
Joseph Whitehouse

We saw a high mountain laying a great distance off to the Southward of us, which appeared to be covered with snow. Our Officers named this Mountain Jefferson Mountain.