Geology Writings, undated

“Pre-glacial Drainage of the Little Miami River,” undated, 6 p. (Plus map) “Pre-glacial Erosion in the Delaware Valley,” undated, 6 p. “Probable Effects of the Glacial Period upon the Land Levels of Central Asia,” undated, 5 p. “The Problem of the Loess in the Mississippi Valley Compared with that in Europe and Asia,” undated, 9 p. “Professor Wright Introduced his Account of the Greenland Voyage,” undated, 29 p.