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Group portrait at William H. Danforth's dinner given for foreign members of The Department of Ana...
Group portrait at William H. Danforth's dinner given for foreign members of The Department of Anatomy.
View of Grover Cleveland's death certificate.
View of Grover Cleveland's death certificate.
Studio portrait of E.V. Cowdry.
Studio portrait of E.V. Cowdry.
Studio portrait of E.V. Cowdry.
Studio portrait of E.V. Cowdry.
Studio portrait of E.V. Cowdry.
Studio portrait of E.V. Cowdry.
Passport photo of Alice Cowdry.
Passport photo of Alice Cowdry.
November-December.
November-December.
May-June.
May-June.
September-October.
September-October.
November-December.
November-December.
A.J. 'Bill' Derbyshire and Hallowell Davis with an early EEG machine, Harvard Medical School Depa...
A.J. 'Bill' Derbyshire and Hallowell Davis with an early EEG machine, Harvard Medical School Department of Physiology.
Allen Davis sleeping in an experimental cubicle.
Allen Davis sleeping in an experimental cubicle.
Dr. W.G. Lennox, Mrs. Boston, and Dr. F.A. Gibbs examining a brain wave graph.
Dr. W.G. Lennox, Mrs. Boston, and Dr. F.A. Gibbs examining a brain wave graph.
Hallowell Davis examining a brain wave graph.
Hallowell Davis examining a brain wave graph.
Graph showing brain waves during the stages of sleep.
Graph showing brain waves during the stages of sleep.
"H. tom Ring: Der romische Schriftsteller Virgil mit einer Nagelbrille."
"H. tom Ring: Der romische Schriftsteller Virgil mit einer Nagelbrille."
"Die Gelenkbrille."
"Die Gelenkbrille."
Nurse Miss Ritzbach holding a newborn infant, City Hospital #1.
Nurse Miss Ritzbach holding a newborn infant, City Hospital #1.
Nurse Miss Bell, City Hospital #1.
Nurse Miss Bell, City Hospital #1.
Group portrait of nurses holding newborn infants, City Hospital #1.
Group portrait of nurses holding newborn infants, City Hospital #1.
Results 121 to 140 of 23638