Titles
- Letter from Charles D. Hurd, Northwestern University to Michael Heidelberger1
- Letter from Courtenay Crocker to Wilbur A. Sawyer1
- Letter from Hugh S. Taylor, Princeton University to Michael Heidelberger1
- Letter from Kai O. Pedersen to Michael Heidelberger1
- Letter from Lewis Hackett to Fred L. Soper1
- Letter from Percival Hartley, Medical Research Council of Great Britain to Michael Heidelberger1
- Letter from Ralph M. Waters to Virginia Apgar1
- Letter from Virginia Apgar to Allen O. Whipple1
- Letter from Virginia Apgar to Karl A. Connell1
- Memorandum from Alan Gregg regarding the Symposium on Mental Hygiene1
- Notes on bile pigments1
- On the job1
- Plasma Potassium Content of Cardiac Blood at Death1
- Quantitative Absolute Methods in the Study of Antigen-Antibody Reactions1
- Remember-- they are waiting: avoid V.D1
- Rx for comfort: this all white elk 4-eyelet perforated nurse's tie gives you new foot freedom1
- Search and Research1
- The Behavior in Successive Nuclear Divisions of a Chromosome Broken at Meiosis1
- The happy village1
- They never fail you: the Canadian Red Cross Society1