ppquilter,
I'd bet all the dust bunnies in my wallet that's a New Home made machine. It is just too similar to my New Home AB to be otherwise. I don't have a good picture of my machine to post and I'm having trouble with Photobucket right now so I can't download any.
The needles, weather 20x1 or 15x1 do have a flat shank and the flat goes to the right. And from that I can see in the 3rd picture, that needle is too long to be a 15x1. The 20x1 is only about an 1/8" to 3/16" longer than a 15x1, so the needle in it might be longer than the 20x1. It just looks too long in the pic.
From what I can see in your pics the machine is threaded correctly, and the thread goes into the needle from the left to the right.
Joe