Textbook of Geology Part I—Physical Geology.4th Edition, by C. R. Longwell, A. Knopf, and R. F. Flint, 1939, John Wiley and Sons. A standard text on geology.
Field Geology.4th Edition, by F. H. Lahee, 1941, McGraw-Hill Book Co. Recognition and interpretation of geologic structures and topographic forms as they are observed, and methods of geologic work.
A Book of Precious Stones.By J. Wodiska, 1910, G. P. Putnam’s Sons. Written for jewelers, but of general interest.
The Curious Lore of Precious Stones.By G. F. Kunz, 1913, Lippincott. Legends and stories of the gem minerals.
The Magic of Jewels and Charms.By G. F. Kunz, 1915, Lippincott.
Popular Gemology.By R. M. Pearl, 1948, John Wiley and Sons. Scientific and industrial uses of gems, current information about their locality and production.
An Introduction to the Study of Fossils.By H. W. Shimer, 1933, Macmillan Co. An introductory textbook about fossil plants and animals.
Invertebrate Paleontology.By W. H. Twenhofel and R. P. Shrock, 1935, McGraw-Hill Book Co.
Textbook of Geology Part II—Historical Geology.4th Edition, by C. Schuchert and C. O. Dunbar, 1941, John Wiley and Sons. The story of the development of life through the ages.
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