About the author: Dr. Donald J. McGraw has been, for the past dozen years, Associate Provost at the University of San Diego where he also has a faculty appointment in Biology. He spent fourteen summers as a Ranger-Naturalist with the National Park Service, all but two of those amongst the Giant Sequoias. His interest are in the human and natural history of these trees, and his research also takes him into the history of marine microbiology and of antibiotics, his doctoral specialties.