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Philpott sitting at his desk with his hand resting against a small lab instrument.
Buddington leaning back in his chair at his desk.
Papanicolaou sitting at his lab bench with a microscope.
Wilcox sitting at a lab bench with a microscope.
Charlotte Haywood sitting at a desk with a microscope and various glass test tubes and other containers sitting in front of her.
Tilden sitting at a lab bench working with a microscope.
Scott sitting at his desk.
G. Thomas sitting at a lab bench conducting an experiment.
Bell working with a microscope.
Dolley sitting at his desk.
Davenport sitting in a chair with his hands in his lap.
Chambers and deRenyi standing outside a building next to some stone stairs, leaning against a brick wall.