1. [Sanitary privies along the back property lines of an agricultural migrant village] Publication: 1930? Subject(s): Toilet FacilitiesRural HealthCommunicable Disease ControlSanitationUnited States
2. [PHS, National Institute of Health]: aerial view Publication: [between 1930 and 1939] Subject(s): LaboratoriesUnited StatesNational Institute of Health (U.S.)Hygienic Laboratory (U.S.)