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safety film negatives

aircraft

center

filter

girl plotters

map

maps

plane

plotters

filter center

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Aircraft warning service. At the filter center, each of the girl plotters is in charge of a section of the map. She receives all messages from spotters in her area and places a marker, called a "pip" on the spot where the plane has been observed. The pip is moved on at each new report, leaving a trail of arrows across the map to show the plane's direction. After a plane has been reported three times the pip is removed and replaced by a standard

Aircraft warning service. At the filter center, each of the girl plott...

Public domain photograph of people around a table, meeting, boardgame, free to use, no copyright restrictions image - Picryl description

Aircraft warning service. Mrs. E.V. Rickenbacker (second from left) watches as a group of volunteer airplane plotters at a filter center push markers into place. Recruited by the Office of Civilian Defense, the volunteers work in shifts of four to five hours, often coming to the center after a day's work at the office. The plotters report every second or third day, contributing many hours to their work than involved in less exacting civilian defense operations

Aircraft warning service. Mrs. E.V. Rickenbacker (second from left) wa...

Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description

Aircraft warning service. At the filter center, each of the girl plotters is in charge of a section of the map. She receives all messages from spotters in her area and places a marker, called a "pip" on the spot where the plane has been observed. The pip is moved on at each new report, leaving a trail of arrows across the map to show the plane's direction. After a plane has been reported three times the pip is removed and replaced by a standard

Aircraft warning service. At the filter center, each of the girl plott...

Actual size of negative is C (approximately 4 x 5 inches). Caption card lists some of the printing history of image. Title and other information from caption card. Transfer; United States. Office of War Informa... More