Correspondence, manuscripts and typescripts, printed material, and photographs, drawings, and slides, 1901-1983, documenting career and research of Charles C. Chapple, particularly work on congenital dislocation of hip in infants; fetal abnormalities and developmental defects; and development of Chapple Incubator and Isolette for premature infants. Series 1 contains material on Chapple's life and career, including typescript chapters of professional reminiscences. Documentation of Chapple's research projects in Series 2 concerns congenital dislocation of the hip, including correspondence with Sir Denis Browne, and Chapple Incubator and Isolette. Incubation material includes correspondence; patent; notes on modifications; historical material; transcript of oral interview with Chapple; and newsclippings and printed material. Series includes files on other projects, including Chapple's "Random memos", documenting discussions, experiments, personal reflections, and published references, 1948-1950, on hormones and other possible research topics. Printed advertisements for Chapple inventions, including Incubator and Isolette, in Series 3. Series 4 contains typescripts and drafts of speeches and presentations; Series 5 contains typescripts and drafts of published and unpublished works. Subjects include congenital deformities, fetal developmental defects, and infant incubation. Series 6 contains drawings and paintings, with early diagrams of Incubator (drawn in 10th edition of L. Emmett Holt's Diseases of infancy and childhood) and chair-bed for congenital hip dislocation patients; photographs; photographic slides used in presentations on infant incubation, developmental defects, and interaction of alumninum and mercury; and lantern slides, primarily images of hip dislocation patients with clinical information.