Sketch for article, parts identified, ""Cecum, mesentery, Ileum, Appendix, Persistent Omphalomesenteric Artery, Superior Ileocecal Fold, Mesoappendix"", signed by J. Allen Chamberlin, M. D.
Ruff diagram could be showing surgical concept, ""Heart Surgery, Bul. N. E. Med. Center 6:49, April '44, Intracardiac Surgery, J. Thor. Surg. 12:566, Aug. '43, Ibid, J. Thor. Surg. II:656, Aug. '42, Heart Surgery, Prec Interst. Post grad. M. A. , North Amer. (1941) pp. 350+ '42
Paper with instrument reading tape taped in position, each tape is labeled with top as ""a"" and bottom as ""f"", ""Fig 12"", ""reduce with Fig 11 lose graph lives""
Bibliography for article on Aortic Valvulotomy, ""Bull. N. E. Med. Center. 6:49, April '41, Gibbon, ? Jr.,: SG&O 69:603, 1939 (extracorporeal circulation), Harken, D. E. and Glidden, E. M.: Epcriments in Intracardiac Surgery. II, Intracardiac Visualization. J. Thor. Surg. 12:566, 1943, See Cumulative Index for Keith, Rockwood, after 1943
Photo of a sketch by J. Allen Chamberlin, M. D., parts labeled, ""Aorta, foregut, omphalomesenteric duct, paired omphalomesenteric arteries, hind gut""