Singer, Francis J., David P. LaBrode, and Lorrie Sprague. Beaver Reoccupation and an Analysis of the Otter Niche in Great Smoky Mountains National Park In Research/Resource Management                        Report. Gatlinburg, TN: U.S. Department of Interior, National Park Service, 1981.

Singer, Francis J., Susan Power Bratton, and Clifford J. Martinka. "Black Bear/Human Conflicts in the Great Smoky Mountains National Park." In Bears -- Their Biology and Management:  Fifth International Conference on Bear Research and Management, 137-139. West Glacier, MT: International Association for Bear Research and Management, 1980.

Singer, Francis J., and Susan Power Bratton. Black Bear Management in Great Smoky Mountains National Park In Research/Resources Management Report. Great Smoky Mountains National Park, Gatlinburg, Tennessee: Uplands Field Reserach Laboratory, 1977.