Award
Fellow of the American Academy of Arts and Sciences
Source: Wikidata population candidate Q839975 · wikidata
SACRED LEGACY ARCHIVES™
1795-11-12 – 1856-01-16

Thaddeus William Harris (November 12, 1795 – January 16, 1856) was an American entomologist and librarian. His focus on insect life cycles and interactions with plants was influential in broadening American entomological studies beyond a narrow taxonomic approach. He was an early agricultural entomologist and served as a mentor and role model for others in this new field. For 25 years Harris served as the librarian of Harvard University where oversaw the rapid growth of the library and introduced one of the earliest American library card catalogs.
entomologist, zoologist, physician, librarian, botanist, botanical collector, biologist
Harvard Medical School
Fellow of the American Academy of Arts and Sciences
Fellow of the American Academy of Arts and Sciences
Harvard Library
American Academy of Arts and Sciences
Harvard Medical School
Fellow of the American Academy of Arts and Sciences
Source: Wikidata population candidate Q839975 · wikidata
William Thaddeus Harris
Source: Wikidata population candidate Q839975 · wikidata
Edward Doubleday Harris
Source: Wikidata population candidate Q839975 · wikidata
Family members can contribute records, photographs and stories or request stewardship of this legacy.
Sacred Legacy Memorial Concierge © 2026 All Rights Reserved