The fonds documents mainly Babkin's professional interests in physiology, especially glandular secretions and the nervous system. The fonds contains correspondence; lecture notes; citations; research notes and papers, including manuscripts sent to him by his colleagues; reprints of scientific articles mainly in Russian; and material used in the preparation of the biography of Ivan Pavlov. The latter contains correspondence with Ivan Petrovich Pavlov and members of his family, 1923-1948; photographs and portraits; and an unabridged typescript copy of Parts 1-3 of Pavlov: a Biography, with manuscript corrections, 1943-1946.

Contains Babkin's lecture notes, correspondence, citations, manuscripts and typescripts, as well as miscellaneous reprints and manuscripts sent to him by colleagues. All notes, manuscripts and typescripts are Babkin's, unless otherwise indicated.

Materials on the autonomic nervous system, including lecture notes, notes on the International Congress in Zurich, 1938, and a review and criticism of a current physiological theory.

Notes in manuscript pencil.

Lectures contains physiology of the autonomic nervous system, history of the autonomic and sympathetic nervous system, adrenal glands, parasympathetic nervous system, histamine, enteric system, relation of drugs to the nervous system, autonomic nervous system and skeletal muscles, influence of electrolytes on the function of the autonomic nervous system, local hormones.

Contains comments on the Congress, the members attending, and the papers presented.