Due to the great devastation to reproduction and young growth caused by fire and lumbering (the former by far the greater cause) District I of the United States Forest Service has for a number of years past, resorted to artificial regeneration or forest planting.
Poch, F. J.
"Planting Reconnaissance in District 1,"
Ames Forester: Vol. 6
, Article 15.
Available at: https://lib.dr.iastate.edu/amesforester/vol6/iss1/15