An American WW2 training poster saying what teachers and pupils should do during an air-raid

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Size: 3000px × 3981px
Photo credit: © CBW / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 2, air-raid, america, american, civil, civilian, defense, front, home, ii, information, instructions, poster, posters, public, pupils, school, schools, states, teachers, training, united, usa, war, world, ww, ww2, wwii