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Titles
- Wilbur A. Sawyer and Fred L. Soper after the arrival of the airplane PP-CAO in Cuiaba, Mato Grosso, Brazil1
- Wilbur A. Sawyer crossing a bridge to inspect the site of a yellow fever infection near Coronel Ponce, Mato Grosso, Brazil1
- Wilbur A. Sawyer on horseback in Banco Vitoria near Ilheus, Brazil1
- Wilbur A. Sawyer's caravan and guides on the road to Coronel Ponce, Mato Grosso, Brazil1
- Workers in the Yellow Fever Laboratory at Bahia, Brazil1