- Marcia and Albert Szent-Gyorgyi1
- Marcus Goodall, Gabor Miskolczy, and Albert Szent-Gyorgyi at the Seven Winds beach1
- Margaret Sawyer1
- Margaret Sawyer in an airplane, Brisbane, Australia1
- Margaret Sawyer with Ruth, Gertrude, and Peggy, at Idylwilde, Michigan1
- Margaret Sawyer with daughters Ruth and Gertrude playing outdoors, Brisbane, Australia1
- Margaret, Ruth, and Gertrude Sawyer sightseeing in Jerusalem1
- Market in the native town, Accra, Gold Coast1
- Marketplace in Sao Goncalo, Pernambuco, Brazil1
- Marshall Nirenberg and Haruhiro Higashida1
- Marshall Nirenberg and Heinrich Matthaei1
- Marshall Nirenberg and Hiroshi Matsuzawa1
- Marshall Nirenberg and Sidney Pestka in office1
- Marshall Nirenberg and his lab staff1
- Marshall Nirenberg and other participants in the National Heart, Lung, and Blood Institute's Research Day1
- Marshall Nirenberg and others at the Weizmann Institute of Science1
- Marshall Nirenberg and unidentified woman1
- Marshall Nirenberg holding snake, age 161
- Marshall Nirenberg in St. Thomas1
- Marshall Nirenberg in his study at home1