William Henry "Doc" Long[1] (7 March 1867 – 10 December 1947) was an American mycologist.
For the following nine years he was Professor of Botany at North Texas State Normal College at Denton.
Under the guidance of George F. Atkinson, Long performed field work at Cornell University, which eventually led to a PhD degree awarded from the University of Texas in 1917.
[2] In the early 1900s, he worked as a forest pathologist in the Sandia Mountains in central New Mexico, conducting pioneering research into tree diseases.
He lived there in a log cabin at what is today the "furthest set" pavilion at the Doc Long Picnic Site in the Sandias.