101. Excerpt from Wilbur A. Sawyer's diary concerning his visit to Colombia

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102. Excerpt from Wilbur A. Sawyer's diary concerning his visit to Colombia

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103. Side street in Ibague, Colombia

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104. Houses in Ibague, Colombia

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105. Flooded houses on the banks of the Magdalena River below Girardot, Colombia

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106. Girardot, Colombia, from a raft on the Magdalena River

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107. Sawyer family home on Circle Drive in Hastings-on-Hudson, New York

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108. Letter from Wilbur A. Sawyer to Margaret Sawyer

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109. Letter from Wilbur A. Sawyer to Margaret Sawyer

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110. House in Oshogbo, Nigeria, in which two cases of yellow fever occurred

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111. Rest house at Oshogbo, Nigeria

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112. Wilbur A. Sawyer at the village office of the Yellow Fever Laboratory in Yaba, Nigeria

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113. Letter from Wilbur A. Sawyer to Margaret Sawyer

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114. Letter from Wilbur A. Sawyer to Margaret Sawyer

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115. Letter from Wilbur A. Sawyer to Margaret Sawyer

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116. Letter from Wilbur A. Sawyer to Margaret Sawyer

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117. Letter from Wilbur A. Sawyer to Margaret Sawyer

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118. Sawyer family home on Ferndale Drive in Hastings-on-Hudson, New York

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119. Margaret Sawyer with Ruth, Gertrude, and Peggy, at Idylwilde, Michigan

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120. The Relationship of Yellow Fever of the Western Hemisphere to that of Africa and to Leptospiral Jaundice

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121. The Preservation of Yellow Fever Virus

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122. Excerpt from Wilbur A. Sawyer's diary concerning his own yellow fever

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123. View from Wilbur A. Sawyer's hotel room in Bahia, Brazil

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124. Letter from Wilbur A. Sawyer to Margaret Sawyer

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125. Swamp near Natal, Brazil where Anopheles gambiae mosquitoes were first found in the Western Hemisphere

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126. Fred L. Soper at an old fort in Bahia, Brazil

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127. The Use of Mice in Tests of Immunity against Yellow Fever

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128. Vaccination against Yellow Fever with Immune Serum and Virus Fixed for Mice

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129. Letter from Wilbur A. Sawyer to Margaret Sawyer

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130. Letter from Wilbur A. Sawyer to Margaret Sawyer

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131. Group photo of delegates to an international health conference in Cape Town, South Africa

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132. Letter from Wilbur A. Sawyer to Margaret Sawyer

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133. Wilbur A. Sawyer holding up an elephant tusk in Bandundu, Belgian Congo

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134. Wilbur A. Sawyer with elephant tusks at Bandundu, Belgian Congo

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135. Letter from Wilbur A. Sawyer to Margaret Sawyer

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136. Pasteur Institute at Brazzaville, Belgian Congo

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137. Rest house at Brazzaville, Belgian Congo

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138. Letter from Wilbur A. Sawyer to Margaret Sawyer

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139. Houses of Dr. Mahaffey and Dr. Beeuwkes, Lagos, Nigeria

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

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

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

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

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

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

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

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147. Rockefeller Institute for Medical Research

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

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

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150. Letter from Wilbur A. Sawyer to Margaret Sawyer

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