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AARoads Shield Gallery
1948 specification reassurance marker. Manufactured between 1948 and 1955.
Iowa City. The backs of the infinitely durable cast-iron shields were reused to create retroreflective markers in the late 1940s and 50s.
Photo by Jim Lindsay, 4/26/1976.
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total shield images in the gallery. Last updated on 10/12/2017.
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