Fifteen minutes north, in Azusa, there is an In-N-Out with a neon sign atop a pole, looking down on a double drive-thru lane. Most In-N-Out signs aren’t lit up with neon lights, but this one is.

The new and remodeled stores have switched to a neon green sign, a color that is not often associated with the white, red and yellow color scheme of the 70-year-old Southern California institution.

With careful work, antique signs can be brought back to life, neon pumping through their glass veins. Cairo Drive-In, early 1940s The Cairo Drive-In was a beautiful piece of abandoned Americana.

About Neon Signs for Businesses. Though they fell out of favor in the 1980s and 1990s, the retro chic of neon signs have made this century-old technology a popular choice for retail storefronts, ...