African American artists in sculpture, photography, painting, sketching, etching, writing and on antique in the United States. A sign reads ' Whitney Museum of American Art'. Exteriors of the museum. People go inside the building. A car parked in front of the building. An art display inside the museum. People view the art exhibition. They move up stairs.
A film 'How to prevent disease' shows the precautions taken to prevent diseases in New York, United States. The Croton and the Ashokan Reservoir as examples of pure, clean water supply. An animation depicts how the well water gets contaminated by sewage from various sources.
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 New York, United States. A woman with a child is about to enter a house. A notice by the Department of Health at the entrance reads that people should not enter the building as it is infected by scarlet fever. The woman reads the notice and returns.
Precautions taken to prevent diseases in the United States. Officials and people stand. They check the evidences of successful vaccination of foreigners.
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