Precautions taken to prevent diseases in Philadelphia, United States. A diagram of Philadelphia subsurface strata depicts how pure water system eliminated typhoid epidemics
Precautions taken to prevent diseases in the United States. Milkmen open the lids of milk cans. They work on milk pasteurizing machines. Bacteria free milk is packed in bottles. The milkmen work on the machine. Milkmen open the lids of milk cans and work on milk pasteurizing machines in the United States.
Precautions taken to prevent diseases in the United States. Officials and people stand. They check the evidences of successful vaccination of foreigners.
Precautions taken to prevent diseases in the United States. A doctor inoculates a small amount of diphtheria toxin to a girl during the Schick test. A red spot on the hand of the girl. The doctor inoculates antitoxin to the girl.
Flags fluttering on the main building of I.A.D.C. (Inter-American Defense College) at Fort Lesley J. McNair, Washington, DC . View of flags from different angles. Adjoining building (number 54) is shown, with different views of the main building. 24 June 1974.
Antique cannons and cannon balls near the Inter-American Defense College, on B Street in Fort Lesley J. McNair, Washington DC. Shots of two types of cannons from different angles. A pile of black cannon balls can be seen. Military personnel stationed at Fort McNair are seen engaged in sports, on softball field in background.
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