Hand-drawn Diagram

John Philip Trinkaus Drawing of Unknown Organism Embryo, 1938
Labeled drawing by Trinkaus of unknown organism embryo, Embryology course, April 24, 1938
John Philip Trinkaus Drawing of Late Embryo and Tadpole Stage of Frog, 1938
Labeled drawing by Trinkaus of frog in late embryo and tadpole stage, Embryology course, graded A, March 7, 1938
John Philip Trinkaus Drawing of Unknown Organism Embryo, 1938
Labeled drawing by Trinkaus of unknown organism embryo, Embryology course, April 24, 1938
John Philip Trinkaus Drawing of 24 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 24 hour chick embryo, Embryology course, March 20, 1938
John Philip Trinkaus Drawing of 23 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 23 hour chick embryo, Embryology course, graded A-, March 21, 1938
John Philip Trinkaus Drawing of 48 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 48 hour chick, Embryology course, April 24, 1938
John Philip Trinkaus Drawing of 24 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 24 hour chick embryo, Embryology course, March 20, 1938
John Philip Trinkaus Drawing of 33 Hour Chick Embryo, with correction, 1938
Labeled drawing by Trinkaus of 33 hour chick embryo, Embryology course, with teacher's note, March 21, 1938
John Philip Trinkaus Drawing of Frog Embryo Stages, 1938
Labeled drawing by Trinkaus of frog embryo stages, Embryology course, March 5, 1938
John Philip Trinkaus Drawing of 33 Hour Chick Embryo, 1938
Labeled drawing by Trinkaus of 33 hour chick embryo, Embryology course, March 19, 1938
John Philip Trinkaus Drawing of Late Stage Frog Embryo, 1938
Labeled drawing by Trinkaus of frog embryo late cleavage stage, Embryology course, March 6, 1938
John Philip Trinkaus Drawing of Frog Larval Stage, 1938
Labeled drawing by Trinkaus of frog larval stage, Embryology course, note from teacher, graded D, March 13, 1938

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