William K. Emerson

• Encyclopedia of United States Army Insignia and Uniforms
• Marksmanship in the U.S. Army
• Marksmanship in the U.S. Army
• Additional notes on the invertebrate fauna of Clipperton Island
• Recent mollusks of the 1940 "E.W. Scripps" cruise to the Gulf of California
• Results of the Puritan-American Museum of Natural History expedition to Western Mexico