This collection is comprised of 20 maps produced as part of Alfred C. Kinsey’s gall wasp research, which culminated in the volume entitled The gall wasp genus Cynips: a study in the origin of species (https://iucat.iu.edu/catalog/932965). Kinsey’s gall wasp research predates the work on human sexuality for which he is more widely known. The maps were created during a span of twenty years, between approximately 1917 and 1937. Eighteen of the collection items are United States Geological Survey base maps onto which hand-annotated species data was added. Of particular interest to researchers may be the two remaining hand-drawn maps (Untitled I; First Expedition, 1931-32, Indiana University Second Mexican and Biological Expedition, 1935-36) which document Kinsey’s research travel routes. The original, physical copies of this set of 20 maps are housed at the Herman B Wells Library, Indiana University, Bloomington.