Voorhis, Ken. Connecting People and Nature : A Teacher's Guide. Townsend, TN: Great Smoky Mountains Institute at Tremont, 1993.

Kemp, Steve, and Ken Voorhis. Trees & Familiar Shrubs of the Smokies. Gatlinburg, TN: Great Smoky Mountains Natural History Association, 1993.

Voorhis, Ken. Smoky Mountain Institute In Third Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1992.