American botanist (1862-1936).
Thomas Grant Harbison (1862–1936) was an American botanist. Harbison lived and worked in Union County, Pennsylvania until 1886 when he moved to North Carolina. He attended college during extended vacations, never registering for a continuous year. He attended classes at nearby Bucknell University. He read extensively and by the age of twenty-one he had acquired a personal library of over one thousand volumes. He took correspondence courses from the University of the City of New York and earned his B.S., A.M., and Ph.D. (in 1888) through correspondence courses from a correspondence school in Ch