set of unique city street pedestrian crossing traffic signal light pressed glass lenses. the blue and amber glass signs retain the original baked black enameled finish used to outline the lettering. the two lenses were likely manufactured by the eagle signal corp. during the 1930's, city officials were trying to figure out how to reduce the death and injury toll among pedestrians. for example, cities began passing laws establishing that pedestrians have the right-of-way under certain circumstances. when that didn't work, they tried physical means, including barriers to prevent pedestrians from crossing where they weren't supposed to cross. one method was to add a light to the traffic lights to indicate the walk cycle. when it was on, all traffic approaching the intersection stopped so pedestrians could cross the streets in all directions, including diagonally. each lens measures 9 1/4 x 8 3/4 inches. priced for the set.