Titles
- 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 Michael Heidelberger to Charles D. Hurd, Northwestern University1
- Letter from Michael Heidelberger to E. J. Crane, Chemical Abstracts1
- 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
- Letter from Wilbur A. Sawyer to Courtenay Crocker1
- Life begins1
- Massachusetts mosquito survey: training course for field personnel1
- Maternal mortality in Kentucky: a study of puerperal deaths, 1932-19391
- Medical and sanitary care of the civilian population necessitated by attacks from hostile aircraft1
- Medical aspects of gas warfare1
- Medical care for recipients of the social security aids in Wisconsin, 19391
- Memorandum from Alan Gregg regarding the Symposium on Mental Hygiene1
- Mortality in preschool group, Kentucky, 1932-19391
- Narcotic act (Division X - Health and Safety Code) State of California: excerpts from California Vehicle Code relating to drug addicts : excerpts from Concealed Weapon Act relating to drug addicts1
- Notes on bile pigments1