April 26, 1805
Meriwether Lewis

... found them all in good health, and much pleased at having arrived at this long wished for spot, and in order to add in some measure to the general pleasure which seemed to pervade our little community, we ordered a dram to be issued to each person; this soon produced the fiddle, and they spent the evening with much hilarity, singing & dancing, and seemed as perfectly to forget their past toils, as they appeared regardless of those to come.

April 26, 1805
John Ordway

a Clear pleasant morning.  Capt. Lewis Sent one man [Joseph Fields, according to Lewis.] about 6 miles up the River Roshjone to See what discoveries he could make.   one man killed a Goose    another killed a buffaloe cow & calf.  Saw a flock of Goats Swimming the river this morning near to our camp. Capt Lewises dog Seamon took after them [and] caught one in the River. Drowned & killed it and Swam to Shore with it.  Capt. Lewis took an observation at 9 oC. and at 12 oClock, also at 4.   he caught Several Small fish in the River Roshjone    at 4 the man returned who went up the River this morning    he Informed us that he went about 8 miles up it to a large creek which came in on the S.S. & that the bottoms was large and covered with timber.&.c.  he brought in a live buffaloe calf, which had followed him about 4 miles.   we then heard that Capt. Clark & the party had come at the Mouth of the River Roshjone about 12 oClock to day.  Capt. Lewis Sent a man [Drouillard, according to Clark.] down for a perogue to come up for our meat and baggage.   Capt. Clark Immediately Sent up a canoe   We moved down to their Camp which was about two miles. [Still in North Dakota.]    our officers Gave out one Gill of ardent Spirits per man.  So we made merry fidled and danced &.c. Camped for the night on the point between the 2 Rivers.   a handsom place thinly covered with timber & a verry large bottom.  Capt. Clark Measured these two Rivers to day and found the Missourie to be 337 yards wide only the water but at high water mark 529 yards wide at this place.   the River Roshjone is 297 yds. water, high water mark 858 yards wide.   the distance from the mouth of the Missourie to the mouth of the River Roshjone is 1888 miles, from Fort Mandane 279 miles from the little Missourie River 186 miles.   the River Roshjone is not quite as rapid as the missourie    the men killed to day Several buffaloe & buffaloe calfs    the Calfs are the best meat we find at this time    one man killed a White Swan [ Trumpeter Swan, Cygnus buccinator.] in a large pond 4 or 5 miles from this, between the two Rivers.   this pond the men that Saw it Judged it to be 4 miles long, & 200 yds across, &.C.    one the iver Roshjone and the Missourie the Game is verry pleanty, viz. buffaloe Elk Deer Goats Some bair.   pleanty of bever, fish &C and a beautiful country around in every direction.  considerable of timber Such as cottonwood Elm arsh &.c.   the Latitude at this place is [blank] North.

April 26, 1805
Patrick Gass

A fine day.  We set out early, and having proceeded 10 miles came at 12 o'clock to the mouth of the Jaune [Yellowstone River] and halted: Captain Lewis and his party had not arrived.  I went up the point about 9 miles, where there are the most beautiful rich plains, I ever beheld.  I saw a large pond or lake.--  [Probably Nohly Lake, MT.]  Captain Clarke while I was absent measured both rivers; and found the breadth of the Missouri to be 337 yards of water, and 190 of a sand-beach; total 527 yards.  That of the Yellow Stone river 297 yards of water and 561 of sand; total 858 yards. The mouth of this river is 1888 miles from the mouth of the Missouri, 278 from Fort Mandan, and 186 from the mouth of Little Missouri.

The river Jaune is shallow, and Missouri deep and rapid.  In the evening Captain Lewis with his party joined us; and had brought with them a buffaloe calf, which followed them 7 or 8 miles.  We killed a number of calves, and found they made very good veal.   There are a great many signs of beaver in this part of the country.  We encamped on the point all night.

April 26, 1805
Joseph Whitehouse

This morning we had fine Clear weather, and set off on our Voyage Early; and proceeded on till 12 oClock A.M., having went 10 Miles, and arrived at the River's mouth called Roshjone, where we came too, in Order to wait for Captain Lewis and his party.--    who had not arrived yet here, Captain Clark shortly after our arrival here, sent a party out a hunting, and directed them to proceed up to the Point of the River Roshjone; and then proceeded to assertain the Width of both Rivers at this place.--   <he> they found on measuring these Rivers, that the River Mesouri was 337 Yards wide; and very deep; and the River Roshjone at its mouth, 97 Yards wide, and continued the same width for a considerable distance up it.--  The River Roshjone is a Shallow River, the water in it is Clear and its current rapid.--  The mouth of this River is 1,888 Miles, from the mouth of the Mesouri River, and 279 Miles from Fort Mandan.   The Country here is Priaries, and some thickets of Trees, the land appears very rich & fertile.--  In the Evening we were Joined by Captain Lewis and his party.--  They had killed several buffaloes, Antelopes, and Deer; which they brought with them and a Buffalo Calf alive, which had followed them 7 or 8 Miles, it being common for the Buffalo Calves, when separated from their dams, to follow the hunters.--

The party that Captain Clark had sent out hunting returned; bringing with them, a number of Buffalo Calves which they had killed--  The game at this season of the year being poor, the flesh of the Buffalo Calves, was a welcome suply to us, they being in general in good Order, and in Taste very & [illegible, crossed out] like Veal <much like it as well as> and had much the resemblance of Veal in its appearance, We found a great many signs of Beaver in the bottoms on both Rivers.--   The place that we encamped in this Evening; <is> was a handsome point, lying on the South side of the River Roshjone

The River Roshjone at its mouth on the South side of, it lays in latitude 48o North