Keywords: Ulmus americana range map 4.png en Natural distribution map for Ulmus americana American elm 1971 http //esp cr usgs gov/data/little/ USGS Geosciences and Environmental Change Science Center Digital Representations of Tree Species Range Maps from Elbert L Little Jr 1971 Atlas of United States trees Vol 1 conifers and important hardwoods U S Department of Agriculture Miscellaneous Publication 1146 9 p 200 maps Elbert L Little Jr of the U S Department of Agriculture Forest Service PD-USGov Ulmus americana range maps Uploaded with UploadWizard |