Gilbert Haven Cady / J. H. Melvin / John Frederick Hall / Mildred Fisher Marple / Morris Morgan Leighton / Myron Thomas Sturgeon / Pauline Smyth / Raymond Ellwood Lamborn / Wilber Stout / William Henking Smith / Russell A. Brant / Walter Converse Brown / William Meredith Merrill / Ohio. Division of Geological Survey / Marian S. Klein | 