1913-1994 1939-2013 1939april7- 1941- 1972-1974 1981- 1994k-746 2006e-287 africa animals biography braindiseases care caregivers childrenwithdisabilities chronicallyillchildren chronicdisease david ebola ebolavirusdisease epidemiology ex-presidents family familyrelationships frost healthreston hemorrhagicfever hillary interviews james kidneytransplantation laboratory nixon politicsandgovernment presidents primatesaslaboratoryanimals psychology rehabilitation unitedstates virginia watergateaffair wc500p939h1994 ws340r436f2006