When did Airstreams ...
become self-contained in the current sense of the word -- with full bathrooms and fresh, gray and black water tanks? In looking through some of the old sales brochures on the VAC site, I noticed that toilets and showers became an option on the Flying Cloud in '54. And I've seen mentions of Airstreams from the '60s (I think -- relying on memory here, a dangerous thing) that didn't have gray water tanks, just black and fresh.
When did these tanks and facilities become standard in the Airstream line? And can earlier Airstreams be fitted with tanks, or are portable gray tanks the only real way to go?
I ask as we continue our search for our first A/S.
Thanks for the guidance,