Thank you for reading this and maybe helping me. This isn't related to a certain model of vintage RV, but rather a vintage RV/Trailer park.
I'm in a argument with our city. They say the spaces in my park are for RVs, I say they are for mobiles. I found permit to build the park dated 1956. They put natural gas riser at every space. My question is did RV's ever hook up to natural gas?
No, RV's never hooked up to natural gas, tho Mobil Homes did... There can be some argument as to what an "RV" actually is/was.
If you want to live in this particular park, there are a couple of options. The first would be to use portable propane tanks to operate your RV as intended. If you plan on staying for quite some time, the appliances "might" be able to be retrofitted to operate with natural gas. It's fairly easy; the orifices are different sizes and pressures different.
I'm no expert on NG vs LP but IIRC LP liquifies at a much lower pressure than NG. This makes it more portable as it doesn't need expensive specialty equipment for refills. NG is almost always piped at low pressure.
The portability is what makes LP a better choice for trailers and RV's. Mobil homes aren't as portable as a camper so they can take advantage of the plumbed in NG. It's much more labor intensive to install NG lines in the ground UNLESS you already have a trench open for water, sewer and electric. Then it's not a big deal to lay in some extra piping.