It also had the nickname of "Roman Catholic Cola". (I am of the same.)
Used to have a bottling plant in La Grange TX. I think RCC also had the Nehi flavored drinks. When it got hot, some people who sold soft drinks had these tanks. Put bottled drinks in them. Iced them down. Drained off the water. Put more ice in. Nothing like an Orange Nehi cooled down on a hot day.