- Neurobiology of the Trace Elements: Volume 1: Trace Element Neurobiology and Deficiencies (Contemporary Neuroscience)
- Report Upon The Educational Statistics Of The City Of Washington, And Of The Proceedings Of The Educational Convention, With The Lectures Of R.m. Smith And G.b. Emerson At The Smithsonian Institution,
- Wildflowers of the Southern Mountains
- Wild Plants of America: A Select Guide for the Naturalist and Traveler (Wiley Nature Editions)
- Neurobiology of the Trace Elements, Vol. 2: Neurotoxicology and Neuropharmacology (Contemporary Neuroscience) (Contemporary Neuroscience)