81. Wilbur A. Sawyer's cottage while visiting the Yellow Fever Laboratory in 1926-1927 in Lagos, Nigeria

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82. Laboratory building of the Yellow Fever Laboratory, Lagos, Nigeria

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83. Animal houses of the Yellow Fever Laboratory, Lagos, Nigeria

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84. Boats transporting cocoa off the shore of Accra, Gold Coast

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85. Market in the native town, Accra, Gold Coast

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86. Houses in the native town, Accra, Gold Coast

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87. View of Cornell Medical School and New York Hospital from Wilbur A. Sawyer's laboratory at the Rockefeller Institute

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88. Rockefeller Institute for Medical Research

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89. Wilbur A. Sawyer, his son Billy, and Johannes Bauer

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90. Yellow fever headquarters at Cuiaba, Mato Grosso, Brazil

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91. Merry Christmas from the House in the Pines from Margaret and Wilbur Sawyer

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92. Wilbur A. Sawyer and Thomas P. Hughes

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93. Wilbur A. Sawyer

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94. Nurses' House and Central Office of the Yellow Fever Service, Rio de Janeiro

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95. The Central Office of the Yellow Fever Service, Rio de Janeiro

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96. View of Rio de Janeiro from Wilbur A. Sawyer's room at the Gloria Hotel

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97. Fred L. Soper and Amaral Machado in the doorway of the Health Department building, Bahia, Brazil

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98. Yellow Fever Laboratory, Bahia, Brazil

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99. Workers in the Yellow Fever Laboratory at Bahia, Brazil

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100. Condor "Junker" plane in Sao Paulo, ready to fly to Corumba, Brazil

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