W. D. Keller

W. D. Keller was an American author known for his contributions to the field of geology, particularly in the context of Missouri's natural resources. His notable work, "The Common Rocks and Minerals of Missouri," serves as a comprehensive guide to the geological features of the region, providing valuable insights for both enthusiasts and professionals in the field. Keller's writing reflects a dedication to educating readers about the diverse mineralogy found in Missouri, highlighting the importance of understanding local geology.