Clays in several parts of Kentucky, with some account of sands, marls and limestones. 1. Kaolins and plastic clays on the eastern rim of the western coalfield; notes on clays in the western, lead, zinc and spar district (F.J. Fohs); clays and sands of Jackson's Purchase; clays in the Red River Valley, by James H. Gardner. II. Clays of Silurian, Devonian, Waverly and Irvine formations. By Aug F. Foerste. III. Analyses of miscellaneous Kentucky clays
Gardner, James Henry, 1883-1964; Fohs, F. Julius; Foerste, August F