A E Douglass


Birthday July 5, 1867

Birth Sign Cancer

Birthplace Windsor, VT

DEATH DATE Mar 20, 1962 (94)

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Astronomer remembered for establishing a wood ring-dating methodology called dendrochronology. He also researched the relationship between the solar cycle and the formation of tree rings.

Before Fame

During the 1890s, he worked at the Lowell Observatory in Flagstaff, Arizona.


Several Mars and Moon craters were named after him.

Family Life

He was born Andrew Ellicott Douglass in Windsor, Vermont. He later settled in Tucson, Arizona.

Associated With

He began his scientific career as an assistant to renowned astronomer Percival Lowell.