A 100 years ago...
“A canvass to find black walnut trees suitable for government use to make gun stocks and airplane propellers is to be made next week by local Boy Scouts. The name of the owner, the location of the tree and its size are reported to government workers and will attempt to arrange for the purchase of all trees fit for use.
http://news.pioneergroup.com/manisteenews/2018/08/06/100-years-ago-349/