PROFESSIONAL POSITIONS
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Research Entomologist (Medical), Technical Development Laboratories, Centers for Disease Control, U.S. Public Health Service, Savannah, Georgia, 1966-1969.
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Research Entomologist (Medical), Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, U.S. Public Health Service, Hamilton, Montana, 1969-1983.
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Research Entomologist (Medical), National Institute of Allergy and Infectious Diseases, National Institutes of Health, U.S. Public Health Service, c/o Department of Entomology, Museum Support Center, Smithsonian Institution, Washington, D.C., 1983-1990.
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Professor of Biology and Curator, U.S. National Tick Collection, Institute of Arthropodology and Parasitology, Georgia Southern University, Statesboro, Georgia, 1990 - present.
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Archivist, Acarological Society of America, 1991 - present.
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Consultant, Naval Medical Research Unit Number 3 (NAMRU-3), Cairo and NIAID PL-480 Project 03016-N, Biochemical and Physiological Studies of Certain Tick Vectors of Disease Agents (1972-1973).
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Project Officer PL-480 Agreement 03-005-1 "Study of Interrelationships of Ticks and of Diseases Affecting Man and Animals, Chiefly in Africa, Asia and Europe," between NAMRU-3, Cairo and NIAID (1972-1975).
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Project Officer PL-480 Agreement 03-036-N "Interrelationship Between Ticks, Vertebrates (Including Man) and Infectious Agents, Especially Viruses," between NAMRU-3, Cairo and NIAID (1975-1982).
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Research Associate, National Museum of Natural History, Smithsonian Institution, Washington D.C. (1978-present)
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Visiting Scientist, Arachnida Section, Zoology Department, British Museum (Natural History), London, England (1977-1978).
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Member, Smithsonian Institution Aldabra Expedition (1986).
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Consultant, UF/USAID/Zimbabwe Heartwater Research Project AFR-0000-C-00-6003-00, Harare, Zimbabwe, (1989).
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Research Fellowship, Onderstepoort Veterinary Institute, Onderstepoort, Republic of South Africa, (February - May, 1992; August - September, 1995; March - April, 1997).
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Principal Investigator, NIH Grant AI30026, "Tick systematics on a Global Basis," (1990-1995).
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Deutscher Akademischer Austauschdienst (German Academic Exchange Service) Scholarship Award, (1995).
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Principal Investigator, NIH Grant AI40729, "Global Systematics of Medically Important Tick Vectors," (1999-2004).
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Guest lecturer, Caribbean Amblyomma Program, Food and Agriculture Organization of the United Nations, Port of Spain, Trinidad, January 2000.