Use of charcoal for outdoor cooking has increased rapidly in the Midwest since World War II. Iowans used about 1 1/2 million pounds in 1955. And the increase is estimated at more than 30 percent per year.
Hansen, N. J.
"Charcoal From Your Woodlot?,"
Iowa Farm Science: Vol. 12
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol12/iss12/4