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October 10, 1957
Correspondence between Harold Erickson, Oregon State Health Officer and Alexander Langmuir, Epidemiology Branch Chief.
Regarding polio documents.
The U. S. National Archives and Records Administration at Atlanta, 5780 Jonesboro Road, Morrow, GA 30260 www.archives.gov/atlanta
“POLIO SURVEILLANCE,” The Global Health Chronicles, accessed December 8, 2019, https://globalhealthchronicles.org/items/show/6231.