The papers of John L. Decker, MD primarily document his work at the National Institute of Health (NIH) as well as his involvment in professional organizations. His travel to and participation in conferences, lectures, and professional committees make up a significant portion of the papers.

The collection includes experiments, experiment data, experimental findings, rheumatoid studies, genetic studies, patient profiles, and X-rays. Patient materials such as X-rays are restricted. There are also texts of lectures given by Decker, typed manuscripts and letters, correspondence with colleagues in the fields of rheumatology, and materials relating to developed treatments. Also included are Decker’s published works and findings, institutional publications, and reprints.

The papers mostly correspond to Decker's stint at the NIH, 1965-1990. However some date as far back as 1931 and as late as 1992.
Subjects: Rheumatology, Genetics