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Transcript of The Invention of the Stop Sign. The Stop Sign Progress/Changes Made on the Stop Sign 1915 1925 1935 1945 1955 1965 1975 1915- A man named William Phelps Eno invented a white sign with black letters, in Detroit, Michigan. 1922- Realizing the stop sign was so important, an association was formed to make more stop signs.
Answers. 1  The change took place in 1949. The HOLLYWOOD sign is a famous landmark in Los Angeles, California that dates back to 1923, with periodic restoration since then. The sign originally read HOLLYWOODLAND, and its purpose was to advertise a new housing development in the hills above the Hollywood district of Los Angeles. The sign's letters were 30 feet (9 m) wide and 50 feet (15 m) high, and were originally studded with light bulbs. The sign was officially dedicated on July 13, 1923.