A short biography of J.W. LEONARD (born: Oct. 28, 1909, Moulton, Iowa, USA; deceased: May 26, 1975, Omaha, Iowa; aquatic entomologist, conservationalist and ecologist; Professor of Natural Resources and Zoology and Research Scientist, Museum of Zoology, University of Michigan) is followed by an appreciation of his work and his odonatological bibliography (1934-1940). At the memorial service for Dr. Justin W. Leonard, held June 6, 1975 in the Rackham Amphitheater on the campus of the University of Michigan, the last speaker concluded his eulogy with a remark that if ”Doc” Leonard could have heard all the words of appreciation and the resume of all his accomplishments, he might have remarked with his characteristic sense of humor, ’’Not bad for a poor Iowa farm boy.”