Old "Letter" Signage

Looking at the photos of the Dolly signage at the Shubert, I started thinking of the old fashioned sign with the lit letters which are placed on the black grid - and picturing the storage area with all these light up letters in different sizes...

Do the theatre owners maintain these signs and keep the "letter inventory" - or does a company like King Displays keep them? While I'm resigned to the LED marquees, I hope those big letter signs and the small hanging signs beneath the marquees remain. (They're so "Broadway-ish" )

Updated On: 1/7/17 at 09:12 AM

By the way, does anyone know the industry term for that type of sign. (I'm certain there has to be one)