1. Wilbur A. Sawyer and workers from the headquarters of Unit No.1, Amphur Sansai, near Chiengmai, Siam Date: [7 March 1921] Genre: Photographic prints
2. Hookworm meeting at Wat Sansai, near Chiengmai, Siam Creator: Sawyer, Wilbur A. Date: [7 March 1921] Genre: Photographic prints