Thaddeus William Harris
United States librarian and entomologist (1795-1856) · United States · On the map · Doctors · Died at 60
Thaddeus William Harris 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.
Thaddeus William Harris is read about 4 times a day, in 9 languages.
A typical day, 30 days to 20 June 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.
Something wrong?People around Thaddeus
Close ties
Media & music
Photos 1
Awards
About this person
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.
