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COLLECTION — Box: Small Manuscript Collections 01 Identifier: H MS c518

Albert M. Grass correspondence regarding electroencephalogram (EEG) machines

Content Description

Correspondence created and collected by Albert M. Grass regarding six- and eight-channel electroencephalograph (EEG) machines manufactured by the Grass Instrument Company and used in the Harvard Medical School Department of Neurology and The Neurological Institute of Children's Medical Center (now Boston Children's Hospital) for the study and diagnosis of epilepsy.


  • 1940-1949 (inclusive)

Language of Materials

Materials in English.

Conditions Governing Access

Collection is open for research. Access requires advance notice. Contact Public Services for further information.

Conditions Governing Use

The Harvard Medical Library does not hold copyright on all materials in the collection. Researchers are responsible for identifying and contacting any third-party copyright holders for permission to reproduce or publish. For more information on the Center's use, publication, and reproduction policies, view our Reproductions and Use Policy.


0.01 cubic feet (1 file folder)

Biographical / Historical

Albert M. Grass (1910-1992), B.S., 1934, Massachusetts Institute of Technology, Cambridge, Massachusetts, was a neurophysiological instrument engineer and co-founder of the Grass Instrument Company. In 1935, Grass and his brother Everett built a 3-channel electroencephalograph (EEG) commissioned by Frederic A. Gibbs to measure alterations in brain wave activity associated with epileptic seizures. Grass joined Gibbs at the Department of Physiology at Harvard Medical School (HMS) as Instrument Engineer later that year. He left HMS in 1943 and founded the Grass Instrument Company with his wife and professional partner Ellen R. Grass in 1945. The Grass Instrument Company was a leading supplier of EEG equipment for clinical and research use. Albert and Ellen Grass also co-founded the Grass Foundation in 1955, which supports neurophysiology research and innovation.

Immediate Source of Acquisition

Gifted to the Center for the History of Medicine by Steven Zottoli in 2017 (Accession #2017-189).

Warren Anatomical Museum Catalog Number


Grass, Albert M. Correspondence regarding electroencephalogram (EEG) machines, 1940-1949 (inclusive): A Finding Aid.
Caroline Littlewood
Description rules
Language of description

Repository Details

Part of the Center for the History of Medicine (Francis A. Countway Library of Medicine) Repository

The Center for the History of Medicine in the Francis A. Countway Library of Medicine is one of the world's leading resources for the study of the history of health and medicine. Our mission is to enable the history of medicine and public health to inform healthcare, the health sciences, and the societies in which they are embedded.

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