RE: Backdrop
Guys...
When in doubt, why not find a few period pics that you like, and then either prine 'em in pieces yourself and stick 'em together, or take 'em down to the local print-shop for a larger one-piece print. They don't have to be high-res, and don't even have to be full color (and ~especially~ not glossy!) to be effective.
Another possible source is the local Salvation Army/Thrift Store/whatever they call it in your area (where people donate stuff for resale for charity) and look for paintings that look like they might make a good scene. Same place would be good for art/photo books that you could have pictures printed/blown up from.
And if you're good with an airbrush (or know someone who is) you could have 'em paint it on a fabric dropcloth. Easily stored then. And some places ~can~ print on fabric..
WhiteWolf