The best place to find things like the Autographic is to look in your local thrift stores/antiques shops/etc. You can get the dust from just being really sloppy with your process.
Yeah, you have to work to avoid dust. If you just slop around in a dusty room you'll have no problem achieving that
You might consider 127 folders. The Vest Pocket Kodak Autographic is a nice one. 127 film can be bought from freestyle. You may have to find a lab that can do it, or get a spool for it (adjustable "universal" reels, like in the patterson universal tank, will fit 127 film).
http://www.camerapedia.org/wiki/Vest_Pocket_Kodak
These are really cool cameras. They cost between $20 and $50 on ebay, and are very simple to operate, and quite neat looking. Very tiny too; they fit into a small pocket (as the name suggests

). They come in versions with different lenses. There's a "low end" model with a meniscus achromat (you can tell it by the fact that it looks like it just has a glassless hole in the front, but the lens is actually tucked away behind this hole and the shutter). Then there's a higher end model with a Kodak Anastigmat f/7.1 lens; it has an obvious glass surface on the front. Both take nice pictures and both will give you a nice vintage look. I have several of these (plus a Contessa Nettel Piccolette, a similar camera but German made). Stay away from the VPK model B. It's a piece of junk compared to the others.
The VPK (anastigmat lens) and VPK (meniscus achromat) are on the left; the junkier (IMO) model Bs are the two on the right.
When buying there are three things to watch for.
#1. Good bellows. It can be kind of rough looking (e.g. wrinkled) but obviously must be light tight.
#2. Viewfinder. These use a little glass prism that dangles on the front to compose. Ask if its clear and has the mirror. Mine have needed cleaning but have worked fine.
#3. Shutter & aperture. These simple shutters are said to be quite reliable and so most should work but it's worth asking about. The only one I've had that didn't work had been oiled by someone, and of course oil gets gummed up with dust and degrades/thickens up, so this particular shutter was totally ruined and useless. The rest have worked basically as good as new. They're very simple but reliable mechanisms.
The downside is the film is an odd size and it might be hard to find a scanner or way to print from it. (I haven't actually shot 127 yet, just got a few cameras, but I plan to and I'll just build a paper / cardboard adapter for my enlarger or scan directly off the glass surface of my flatbed film scanner).
Buy film from freestylephoto.biz or bluemooncamera.com
'course while these are really neat cameras you may just be better off with one that takes the more common 120 film size. You can do colour, and there are many B&W films available, and they're easier to deal with. But these 127 cameras are pretty damned cool (even if you can only get Efke film for them)
They also have no tripod mount and no shutter release cable, so if you plan tripod & long exposures this probably isn't the right camera for you. (The Contessa Piccolette does have a shutter release cable hole, but no tripod mount... weird).