Note I-31 — Chapter I · ITINERARY: UP THE MISSOURI AND OSAGE RIVERS, AND THROUGH KANSAS TO THE PAWNEE VILLAGE ON THE REPUBLICAN RIVER, JULY 15TH-SEPT. 30TH, 1806.

Before the Youngar is reached Pike passes on his left Linn cr.; county seat called Linn Creek, a mile above its mouth. The name of the river has fluctuated widely. Pike has Yungar, Youngar, and also Nehemgar; the latest G. L. O. and U. S. G. S. maps letter Niangua. The word, whatever may be its preferable form, is the Osage name of the bear, though by some it is said to refer to the numerous springs at the sources of the stream. It is by far the largest tributary of the Osage thus far reached; Pike credits it with a canoe navigation of 100 m. The main stream heads in Webster Co., in relation with sources of the Osage fork of the Gasconade, and runs through Dallas Co., also touching the W. border of Laclede, into Camden; its tributaries are numerous and widespread. One called Little Niangua falls in on the W., 6 or 8 m. above the mouth of the main river. To-day's voyage takes the Expedition past Purvis, and finishes about 4 m. above Bolinger or Bollinger cr., from the S., on which are the Osage Iron Works.