Check out some of John Green or Christopher Murphy's books. There are quite a few logger reports.

One of the most interesting (not logger) is from the famous surveyor/ map maker that worked for the well known and historical companies Hudson Bay Co. in the late 1700's and Northwest company in the early 1800's. His name was David Thompson and he was actually in the territory of the upper Columbia River before Lewis and Clark. He kept precise record of things he saw in his daily journal and came upon some massive foot prints. Interestingly, there were only two feet and he kept returning to his journal and writing about how he could not understand what it could be. The French people he was with wanted to keep tracking it and hunt it and the first nations people he was with forbid them as they seem to know exactly what it was and what they be getting themselves in to. There were many reports before the "bigfoot" craze of the 1960's.

Cool fact. The Thompson River is named after David Thompson as he was the first white man to explore the area.

If nothing else, it's great to have bigfoot stories around the camp fire.