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Photograph

Spraying Elms with DDT

Date: 1967
Description: Worker spraying Elm trees with DDT pumped from a tank hitched to the back of a vehicle equipped with a snow plow.
Photograph

Lesson on Flies in Classroom

Date: 1915
Description: A student is using a pointer to direct the attention of seated students toward a poster labeled "Life Cycle of a Fly" during a lesson on the dangers of hou...
Photograph

Fuel Oil for Mosquito Control

Date: 
Description: View from front of a man on a motorcycle squirting fuel oil into a sewer opening at a curb to control mosquitoes. The motorcycle has an oil tank attached l...

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