Letter from Charles F. Binns to O. E. Anderson, March 31, 1921
Binns writes Anderson, "This [school?] undertakes the examination of clays for a fee of $25.00. [A sample?] of about five pounds will be necessary to carry out the work. Upon receipt of this and your order I shall be glad to have it done."
Charles F. Binns, O. E. Anderson, O. E. Anderson Lumber Co., clay analysis