Ayres was an inventor who worked independently and for a number of companies. Among his varied research interests were radar, stereo photography, and aircraft navigation systems. In the 1950s-1960s he developed gill-type underwater breathing equipment.
Collection deals primarily with Ayres' artificial gill underwater breathing equipment project. Includes correspondence (1956-1971), personal papers, three boxes of research notes, documentation of the success of the invention, and subsequent patents and patent litigation; also publicity for the artificial gill, items from Ayres' other projects, and related periodicals, brochures, articles, etc.
Waldemar A. Ayres Collection, 1954-1974, Archives Center, National Museum of American History