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Show more60 typed and handwritten letters, handouts, and papers regarding Brush and his interactions with the American Philosophical Society in the years 1921, 1922, 1923, 1924, including presentation of papers, officer appointments, responsibilities related to offices he was elected to, as well as printings and reprintings of his papers published in the Society publications. Also includes a proof copy of the fourth paper on Some New Experiments in Gravitation by Brush
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 3
Folder 15
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Show more2 Typed letters from Hudson Maxim to Charles F., Sr., regarding Brush's papers and speeches on gravitation from 1921. Includes "Christmas Greeting and New Ten Commandments For the Coming Year 1923-1924" written by Maxim.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 3
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Show more2 letters, 1 handwritten 1 typed, between T. Mendenhall and Charles F., Sr., regarding Brush's inquiry about Professor C. L. Norton and a detailed discussion of Brush's pendulum experiments and gravitation thesis.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 4
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Show more16 typed and handwritten letters between John Millis and Charles F., Sr., discussing Einstein's Theory of Relativity, Brush's gravitation experiments, Millis's thoughts on gravity and magnetism, astronomy, and one about the Brush Foundation. Final letter from Millis wishes Brush happy 80th birthday. Includes paper Millis wrote for Scientific American's Einstein contest in 1921, and a letter from Millis to Scientific American regarding the papers they published as a result of the contest. Letters from 1921, 1922, 1925, 1928, 1929.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 7
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Show more17 Typed letters between Charles Norton and Charles F., Sr., regarding Norton's desire to attempt to repeat some of Brush's gravitation experiments, particularly the pendulum experiments, and further findings and discussions of gravitation between the two. Dated 1921, 1922, 1924, 1926.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 9
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Show more3 letters between I. R. Prentiss and Charles F., Sr., Prentiss in 1921 describing his idea for golf clubs weighted inversely according to length to make each club in a set hold the same balance, Brush in 1923 describing his 1886 patent on storage batteries, and Prentiss's response to Brush's letter in 1923.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 12
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Show more2 typed and handwritten letters from Henry Seymour to Charles F., Sr., in 1885 regarding a patent suit about Brush's Windmill System.; 4 Typed letters from Seymour in 1920 and 1921 discussing Brush's storage battery patent suit from 1886, and Seymour's willingness to work with Charles F., Jr., should he also claim patents. Mentions visit by Charles F., Jr.; 1 Typed letter from Seymour's secretary informing Brush of Seymour's death on May 1, 1921.
Charles F. Brush, Sr., Papers
Series 1: Correspondence
Subseries 3: Business and Professional (1876-1931)
Box 5
Folder 13
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