1. ATSDR (Agency for Toxic Substances and Disease Registry). 2009a. Health consultation – Martin Creek Lake – Henderson, Rusk and Panola Counties, Texas. Available at http://www.atsdr.cdc.gov/hac/pha/pha.asp?docid=117&pg=1
2. ATSDR (Agency for Toxic Substances and Disease Registry). 2009b. Health Consultation – Welsh Reservoir – Mount Pleasant, Titus County, Texas. Available at http://www.atsdr.cdc.gov/hac/pha/pha.asp?docid=145&pg=1