Wilbur A. Sawyer The Wilbur A. Sawyer Papers

Yellow Fever Laboratory, Bahia, Brazil

Workers in the Yellow Fever Laboratory at Bahia, Brazil

Wilbur A. Sawyer's caravan and guides on the road to Coronel Ponce, Mato Grosso, Brazil

Wilbur A. Sawyer on horseback in Banco Vitoria near Ilheus, Brazil

Wilbur A. Sawyer crossing a bridge to inspect the site of a yellow fever infection near Coronel Ponce, Mato Grosso, Brazil

Wilbur A. Sawyer and Fred L. Soper after the arrival of the airplane PP-CAO in Cuiaba, Mato Grosso, Brazil

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

View of Corumba from above the Paraguay River

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

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

Portrait of Mr. Lisboa, village telegraph officer, with Fred L. Soper and Alexander Burke in Coronel Ponce, Mato Grosso, Brazil

PP-CAO, the "flying cow" airplane, in Corumba, Brazil

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

Mosquito capture squad, Sao Goncalo, Pernambuco, Brazil

Marketplace in Sao Goncalo, Pernambuco, Brazil

Group photo after Wilbur A. Sawyer's arrival in Cuiaba, Mato Grosso, Brazil

Fred L. Soper, Wilbur A. Sawyer, and their guide in front of a shelter at the site of a yellow fever infection near Coronel Ponce, Mato Grosso, Brazil

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

Fred L. Soper and other doctors waiting for the repair of a blow-out, en route to Sao Goncalo, Pernambuco, Brazil

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

Fred L. Soper and Alexander Burke crossing a bridge to inspect the site of a yellow fever infection near Coronel Ponce, Mato Grosso, Brazil

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

Burity de Conceicao, Mato Grosso, Brazil