Laboratory of Tree Ring Research
In 1937, the scientific study of tree-rings in America was formalized by the creation of the Laboratory of Tree-Ring Research (LTRR) here at the University of Arizona in Tucson. By that time, founder Andrew Ellicott Douglass had been working with wood for over 30 years, and so the tradition of dendrochronology here in Tucson is older than the Lab itself. The LTRR has long since given up the distinction of being the nation's only dendrochronology lab, but we have helped to found many dendrochronology labs around the world. Our unique heritage is still a source of pride, and it encourages us today to remain dedicated to our ideals: excellence in research, excellence in teaching, and excellence in outreach.
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