Cox, Paul Ernest2017-05-182017-05-181907-08-28http://hdl.handle.net/10829/7519Cox described quality of local clay from Arkansas.2 pagesen-USCox, Paul Ernest, 1879-1968Binns, Charles Fergus, 1857-1934ClayLetter from Paul E. Cox to Charles F. Binns, August 28, 1907Correspondence