8692. [Zyklon poured down a ventilator, cowl removed, New York, N.Y.] Publication: [194-?] Subject(s): United States. Public Health Service.
8693. [One safe way of handling a rat, New York, N.Y.] Publication: [194-?] Subject(s): Rodent ControlUnited States. Public Health Service.
8695. [Rat nests inside a valve casing, New York, N.Y.] Publication: [194-?] Subject(s): Rodent Control
8696. [Three PHS medical officers in uniform of the early 20th century] Publication: [19--?] Subject(s): United States. Public Health Service.
8698. [Men working in a lab, New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): LaboratoriesLaboratory PersonnelUnited States. Public Health Service.
8699. [Technician working with a chemical in a dish, New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): LaboratoriesLaboratory PersonnelUnited States. Public Health Service.
8700. [Lab workers preparing captured rats for examination, New Orleans, La.] Publication: [between 1914 and 1920] Subject(s): Plague -- prevention & controlLaboratory Personnel