Thaddeus William Harris (1795-1856): Nature, Science, and Society in the Life of an American Naturalist - Tapa dura

Thaddeus William Harris first made his living as a physician and for many years thereafter as Harvard librarian. For six years, he also taught natural history in Harvard College - Henry David Thoreau was one of his students - but his desire for a full-time professorship was never realized. He is chiefly remembered as a naturalist and is generally considered the "founder of applied entomology" in the United States. His historical reputation is linked to his "Treatise on Some of the Insects Injurious to Vegetation", first issued in 1841 as a report of the Massachusetts biological survey. Harris was concerned with agricultural pests (and most of his papers were published in agricultural and horticultural journals).