The Clays of Wisconsin and Their Uses with a Report on Molding Sands Geography Nonmetallic Minerals Rocks and Minerals Surficial Geology Data and Resources B015 The Clays of Wisconsin and Their Uses With a Report on Molding Sands Ries, H.; Gallop, F.L.; 1906 Report: 259 p. Download B015-plate02 Map Showing Distribution of Wisconsin Clays [plate 2] Buckley, E.R.; 1906 Download B015-plate20 Map of Wisconsin Showing Localities From Which Samples Were Tested for the Report [plate 20] 1906 Download Related Collections Bulletin View Bulletin