A.E. Douglass Collection
ABOUT THE COLLECTIONS
The Laboratory of Tree-Ring Research
In 1937 A. E. Douglass, founder of the modern science of dendrochronology, established the Laboratory of Tree-Ring Research at the University of Arizona. The Tree-Ring Lab is recognized worldwide as a preeminent center for the advancement of tree-ring techniques and the broad application of dendrochronology in the social and environmental sciences.
The Tree-Ring Lab collections and archives includes materials from LTRR's first director, Andrew Ellicott Douglass. Selected items from the A.E. Douglass archives have been digitized and made available in this online collection.
QUESTIONS?
For more information about The Laboratory of Tree-Ring Research, including collections and archives available for research, visit the LTRR website at: http://ltrr.arizona.edu.
Collections in this community
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Archaeology
A.E. Douglass Collection - Archaeology -
Astronomy
A.E. Douglass Collection - Astronomy -
Miscellanea
A.E. Douglass Collection - Miscellanea
Recent Submissions
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A Summary of Planetary Work at the Lowell Observatory and the Conditions Under Which It Has Been PerformedIn accordance with the title, the present paper divides itself into two parts, of which the first wil1 be a brief resume of the planetary work done here, with a few details and announcements which have not heretofore been given to the public, and the second will present the writer's personal opinions of why it has been possible to reach these results. The latter must necessarily be more in the form of suggestions than facts, for to give facts one must have tried personally many widely separated localities over long periods of time.