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All Images 58 items

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

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

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3. Soper preparing for an inspection tour of Maranhao, Brazil

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4. Fred L. Soper's United States passport

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

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6. [Counting hookworms in prisoners in Asuncion, Paraguay] (image 1)

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7. [A type of privy put in as a result of the campaign against hookworm in Paraguay] (image 3)

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8. [A type of privy put in as a result of the campaign against hookworm in Paraguay] (image 4)

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9. [Counting hookworms in prisoners in Asuncion, Paraguay] (image 2)

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10. [A type of privy put in as a result of the campaign against hookworm in Paraguay] (image 1)

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11. [A type of privy put in as a result of the campaign against hookworm in Paraguay] (image 2)

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12. [Yellow Fever Service public information posters as they appeared in streetcars in Recife, Brazil] (image 1)

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13. [Yellow Fever Service public information posters as they appeared in streetcars in Recife, Brazil] (image 2)

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14. [Yellow Fever Service public information posters as they appeared in streetcars in Recife, Brazil] (image 3)

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15. Fred L. Soper

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16. Perifocal spraying of a water container in squatter dwelling in Caracas, Venezuela

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17. Microscopists screening Anopheles larvae for Anopheles gambiae

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18. Sanitary inspector checking for Aedes aegypti mosquito larvae in Mexico

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19. Yellow fever vaccination in Belem, Brazil

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20. Perifocal spraying to control mosquito breeding in Asuncion, Paraguay

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