Contains the professional papers of Ed Thalmann (1945-2004), former assistant clinical professor in anesthesiology for Duke University's Center for Hyperbaric Medicine and assistant medical director of the Divers Alert Network in Durham, North Carolina. Types of materials include correspondence, reference files, articles, slides, manuals, and notes. Major subjects include decompression, decompression sickness, and diving. Materials range in date from 1970 to 2003, with the bulk of material undated.