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Show moreMost of the letters here were written between Charles F. Brush, Sr., and his family members, most notably his son, Charles F. Brush, Jr., and his son’s wife, Dorothy Brush (Walmsley). Unfortunately, not much correspondence exists before 1910. In the letters (dated between 1911 and 1929) between Brush, Sr., his son, and daughter-in-law, they discuss their lives in Cleveland and elsewhere, their travels, scientific experiments, school, and grandchildren. The correspondence also documents how Dorothy and Brush, Sr., coped with the death of Charles F. Brush, Jr., in 1927. The correspondence files also highlight Brush’s efforts to prove his theory of gravitation. This theory suggested that the behavior of gravity could be explained by the action of ether. Ether was thought to be a gas which many believed occupied space in which light traveled. Thus, Brush attempted to prove the existence of ether. After many years of conducting his own experiments in his Euclid Avenue home’s basement laboratory to prove the existence of ether, Brush contracted scientists at the U.S. Bureau of Standards and General Electric to further his work. As the correspondence showed, the experiments done at the U.S. Bureau of Standards and General Electric could not prove, to their satisfaction, the existence of ether.
Charles F. Brush, Sr., Papers
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Show more7 Typed and handwritten letters between W. W. Keen and Charles F., Sr., written in 1924 and 1928, in the first correspondence Keen requests money from Brush, which Brush feels he cannot afford at the time, Keen later writes to congratulate Brush on receiving the Franklin Institute Medal in 1928, and again discussing Brush's theory of gravity, about which Keen recommends reading Millikan's articles and Brush agrees. Final letter from Keen regarding establishment of Brush Foundation, particularly his familiarity with Dr. T. Wingate Todd. 2 typed letters between Sarah Starr and Brush, written in 1928, in which Starr describes the creation of a Keen Fund to which Brush promises 1000 dollars.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 4
Folder 16
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Charles F. Brush, Sr.,
Show more2 bound volumes of newspaper clippings regarding Charles F., Sr., his life, inventions, awards, and more, between 1880 and 1929
Charles F. Brush, Sr., Papers
Series 6: Newspaper Clippings (1879-1964)
Box 23
Folder 4
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