A conflation of factors, including Osborn living out of the country for some time, led to the signs ... argon and neon. Argon provides a blue color while neon provides an orange-red hue.
The first neon sign was installed in New York’s Times Square om 1924 and in Las Vegas in 1928. Neon remained popular through the 1960s when LED lights were invented. Popularity has waxed and ...