Studio portrait of Cristina L. Sadowsky.
Studio portrait of Bronislaw Sabat.
Portrait of Ernest Sachs seated at a microscope.
Portrait of Ernest Sachs.
Studio portrait of Ernest Sachs.
Portrait of Joseph F. Ruwitch.
Portrait of Joseph F. Ruwitch.
Portrait of Joseph F. Ruwitch.
Studio portrait of Rimma D. Ruvinskaya.
Studio portrait of John J. Russell.
Portrait of John H. Russell in a laboratory setting.
Studio portrait of Edward Charles Runge.
Studio portrait of Thomas F. Rumbold.
Studio portrait of Luzius Ruedi.
Studio portrait of Robert Ruby.
Studio portrait of Robert Ruby.
Studio portrait of Robert Rubin.
Portrait of Chanae Ruangsiri in a laboratory setting.
Portrait of Chanae Ruangsiri in a laboratory setting.
Studio portrait of Robert K. Royce.
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