The Oskar Kohnstamm papers represent many parts of his medical career, both researching neurology and psychiatry and establishing a well-known sanatorium.

The Medical Journals series contains published research articles, predominantly by Dr. Kohnstamm but also including a couple from collegues on related topics. The majority of the journals are from German publications, and have been placed in chronological order but original folder divisions have been maintained.

The series entitled "Materials concerning Dr. Kohnstamm and his Sanatorium in Koenigstein im Taunus" contains ephemera, newspapers, and other materials concerning Dr. Kohnstamm's biographical details, or information regarding the establishment and running of the Sanatorium Dr. Kohnstamm. These materials were also placed in chronological order but original folder divisions have been maintained.