R. C. Roark

• A bibliography of chloropicrin, 1848-1932
• A bibliography of chloropicrin, 1932-1934
• A digest of the literature of derris (deguelia) species used as insecticides, 1747-1931
• A second digest of information on allethrin and related compounds
• An index of patented mothproofing materials
• List of publications of the Division on Insecticide Investigations, July 1, 1927, to June 30, 1937
• Lonchocarpus species (Barbasco, Cube, Haiari, Nekoe, and Timbo) used as insecticides
• The adulteration of insect powder with powdered daisy flowers (Chrysanthemum leucanthemum L.)
• A list of publications, on 2, 2-bis (parachlorophenyl)-1, 1, 1-trichloroethane (called DDT) from 1874 to April 30, 1944, inclusive
• Devil's shoestring (Cracca virginiana L.)
• Lonchocarpus (Barbasco, Cube, and Timbo)
• References to reviews and popular articles on Derris