On the entrance of America into the great war, following the example of England and at the instigation of the United States Forest Service our government immediately started the organization of lumbering units to supply the needs of her army.
Morris, R. D.
"Log Driving in France,"
Ames Forester: Vol. 6
, Article 6.
Available at: https://lib.dr.iastate.edu/amesforester/vol6/iss1/6