Manuscripts
Manuscripts: Telescopes, Silvering (1916). 5 items
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Sketch Sheets for 100-inch Telescope (1916-1919). 196 items
Manuscripts
The papers consist of Francis Pease's research papers. It contains correspondence, manuscripts, Pease's notes (including his work notes, many of which contain various drawings and diagrams by him), reprints, photographs, etc. Topics covered in the collection are numerous and include the Mount Wilson Observatory, the Yerkes Observatory, astronomy and astronomers. The majority of it relates to Pease's research on the speed-of-light (highlighting his manuscript with Albert A. Michelson), Ether drift, his observations of the Moon, the Sun, Jupiter, star diameters, galaxies, nebulae, as well as his work on interferometers, and the design and construction of telescopes.
mssPease papers
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Scherer Correspondence. 5 letters (1916-1919). 5 items
Manuscripts
The bulk of the collection centers on Scherer's work with the Council of National Defense during the First World War. There are two and half boxes of documents which had been previously collected in two large volumes. The original arrangement (by date) has been retained for both collections (labeled "Bulletins" and "General Letters," respectively) in cataloged form. The "General Letters" collection is the most extensive; it comprises the entirety of Box 2 and the first half of Box 3. In some cases - due to the similarity of their subject material - two or more consecutive listings in the index have been cataloged together in one folder. There are two smaller collections labeled "Noteworthy Activities Undertaken by State Councils" and "I.C.A. Circulars." These two smaller document collections have their own folders in Box 3. All four contain an index - those for the two still-bound collections list the bulletins in the reverse order of their appearance. The two large volumes have been cataloged in the order listed in their indexes.
mssScherer papers
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"On Increased Telescopic Penetration:" [manuscript] (1926, May 26). 1 item
Manuscripts
Typed manuscript, 18 p., by Pease. Corrections and comments in pencil by Frederick Hanley Seares.
mssPease papers