Director’s Files of the Mount Wilson Observatory, 1900–1926
Series — Multiple Containers
Scope and Contents
From the Collection: This collection provides a thorough record of George Ellery Hale’s activities. A prolific correspondent, Hale kept copies of most of his letters. The collections contains significant material relating to the theoretical and instrumental development of astrophysics, the history of the Mount Wilson and Palomar Observatories, and the early history of the California Institute of Technology. It also documents Hale’s work with the National Academy of Sciences and National Research Council.
Conditions Governing Access
Most of this collection is available on the web, linked from individual folder records in this finding aid. The original paper copies of the first nine series are located at the Caltech Archives, where access is available to anyone conducting research for which it is necessary; please contact the Caltech Archives to make an appointment. The original Director’s Files of the Mount Wilson Observatory are located at the Huntington Library, where they are available to qualified researchers by application through their Reader Services Department.
11 linear feet
Existence and Location of Originals
This series is located at the Huntington Library. It is open to qualified researchers by application through their Reader Services Department.
Existence and Location of Copies
Almost all of this series has been filmed and digitized. The exceptions are documents concerning the budgetary history of the Carnegie Institution of Washington and the Observatory which, in 1968, the director of the Mount Wilson Observatory considered confidential.