41. Fred Soper as director of the Pan American Health Organization

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42. Fred Soper and his Alpha Kappa Kappa fraternity brothers at Rush Medical College

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43. Fred L. Soper's United States passport

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44. Fred L. Soper and Alexander W. Burke crossing a bridge to investigate an area where yellow fever occurred without the Aedes aegypti mosquito

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45. Fred L. Soper

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46. Emergency cemetery for malaria victims in Ceara, Brazil

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47. Dusting villagers with louse powder in Esbe Rameses, Egypt

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48. Diagram of male hookworms used in public education lectures

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49. Diagram of female hookworms used in public education lectures

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50. De-lousing clothing on a street corner in Mitrihena, Egypt

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51. Danger of typhus carried by lice

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52. Burying a baby in the emergency cemetery in Ceara, Brazil

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53. Boletim De Inspecoes Do Guarda

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54. Bandeiras Usadas Pelo Servico Nacional De Febre Amarela [5-8]

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55. Bandeiras Usadas Pelo Servico Nacional De Febre Amarela [1-4]

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56. A nine year-old Brazilian boy, displaying the hookworms and tapeworms he expelled when treated by the Rockefeller Foundation staff

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57. A health worker inspecting a village pool for Anopheles gambiae mosquitoes, Egypt

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58. 'Ubiqueteers' J.H.U. School of Hygiene and Public Health

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