John P Trinkaus' MBL Embryology Course Notes, Notebook I, 1939. Page 51

Notes from Viktor Hamburger's lecture. Trinkaus takes notes on "Hans Spemann and Historical Background"Lecturer: V. Hamburger, Lecture "Determination and organizer action in Amphibian development." (Information taken from the 1939 Embryology Course Book)Page 51 of 113 from the first notebook of lecture and laboratory notes that John P. Trinkaus took during his time as a student in the Marine Biological Laboratory Embryology Course in 1939 in Woods Hole, MANote