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aircraft

maps

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1940 s

administration

aeronautics

air units

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Aircraft warning service. Pips and standards are pushed into place by volunteer plotters before the watchful eyes of representatives of the air units who sit in a balcony overlooking the board. The Army, the Navy or the Civil Aeronautics Administration must identify all the planes whose standards are placed on the map. Otherwise, the Army Interceptor Command order fighter planes to take off after the unknown plane

Aircraft warning service. Pips and standards are pushed into place by ...

Picryl description: Public domain image of a political campaign, group of people, meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

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

Washington, D.C. Preparing an advisory forecast at the U.S. Weather Bureau. Sectional manuscript maps are distributed to plotters prior to plotting weather data

Washington, D.C. Preparing an advisory forecast at the U.S. Weather Bu...

Picryl description: Public domain photograph of an office worker, 1930s, free to use, no copyright restrictions.

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. Pips and standards are pushed into place by volunteer plotters before the watchful eyes of representatives of the air units who sit in a balcony overlooking the board. The Army, the Navy or the Civil Aeronautics Administration must identify all the planes whose standards are placed on the map. Otherwise, the Army Interceptor Command order fighter planes to take off after the unknown plane

Aircraft warning service. Pips and standards are pushed into place by ...

Picryl description: Public domain image of a political campaign, politician, meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.