1. A history of pollen mapping and surveillance: The relations between natural history and clinical allergy 
Gregg Mitman, PhD 
Journal of Allergy and Clinical Immunology 
Volume 114, Issue 5, Pages (November 2004)
DOI: /j.jaci
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2. Fig 2
Durham's national pollen maps, like this one from 1935 produced in the Journal of Allergy, not only aided physicians in the regional diagnosis and treatment of allergy but also suggested how land use patterns were contributing to the prevalence of hay fever as a disease. Reprinted with permission.17
Journal of Allergy and Clinical Immunology  , DOI: ( /j.jaci )
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