Fort Nesqually4, the Hudson Bay trading post, was about seven miles to the south [of Fort Steilacoom]. Several farmers had taken donation claims5 on a few known fertile spots within a few miles of the fort on the Nesqually plains. The buildings were very primitive, being built of logs of small fir saplings with the bark on. The chincks were daubed with clay, which constituted the interior finish.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/works/a/august-valentine-kautz/paragraphs/chapter-1-footnote-4.md
Nothing Worthy of Note Transpired Today (archive.org) The transcribed journals of Civil War General August Valentine Kautz that detail his daily life and activities during his post at Fort Steilacoom in 1850.
https://archive.org/details/nothing-worthy-of-note-transpired-today-the-northwest-journals-of-august-v.-kautz/page/n57/mode/2up