you guys might enjoy a book called "They Tried to Cut it All" by Edwin Van Syckle. It's a collection of first-hand stories of life in the lumber camps and logging sides of Grays Harbor Washington from the late 1800's into the 1900's. It has photos, stories, narratives, and a lot of information about just how those big trees were cut, moved, and milled.
I talked to an old timer when I lived on the Oregon Coast who told me the average logger in the 1910's was about 5'7", 165 lbs, and ate an 8000 calorie a day diet.