ロバート・レークス・シュロック
Hervey Shimerと共著 Index Fossils of North America, New York, Wiley 1944
Sequence in layered rocks: a study of features and structures useful for determining top and bottom or order of succession in bedded and tabular rock bodies, McGraw Hill 1948
William H. Twenhofelと共著 Principles of invertebrate paleontology, McGraw Hill 2. Auflage 1953 (zuerst Invertebrate Paleontology 1935)