Oregon Historical Society, Oregon Historical Quarterly (1910)
“ Linn County was created December 28, 1847, by the Provisional Legislature. (General and Special Laws of 1843-9, page 55) . It comprised all that portion of the original Champooick District south of a line commencing in the middle of the channel of the Willamette River, opposite the mouth of the Santiam River, thence up the latter river to its north fork, thence up said north fork to the Cascade Mountains, thence due east to the summit of the Rocky Mountains. Its original southern boundary was a part of what are now the California and Nevada north lines. ”
