I purchased a Russian Horizon swinging lens camera in 1994. Since then I've taken quite a few panoramic pictures and have gotten to know the little points that can turn a picture bad easily and also I've picked up some information to note when a swinging lens camera has been used.
Take the point with the two landscape pictures, that in general, the horizon is in the middle, roughly, which negates the rising or dipping of the land. This is pretty much the only way a swinging lens camera can take a normal perspective type picture.
Also the buildings exhibit one of the quirks of a swinging lens camera. If you look at the Tulsa picture, pan to the right and check out the white (ish) building. You should notice that it appears slightly curved. This effect happens because the lens is swinging towards the right, or end of the frame and the image is actually a curved image. Roughly central is the main street, which appears pretty normal as it should. Then as the image goes to the left, check out the building with the white writing on it, it starts to curve just like the white one on the other side of the picture. The horizon on the far left is not in the centre and as a result is dipping, this is another characteristic of a swinging lens camera.
The big Indian one with the big tent in the middle and the big fold mark also has a really interesting pointer to what I think is definitely a swinging lens camera. Just to the left of the big fold mark there are two women walking. The woman on the right is very blurred, indicating that she is walking faster than the other woman. My thoughts are that the woman on the left is moving slightly towards the camera and therefore moving slower, as far as the camera is concerned, whilst the women on the right is walking directly across the front of the camera in the opposite direction to the movement of the swinging lens. Therefore she becomes shortened, which appears to have happened!
This thinning is pretty much what I have observed with my own swinging lens camera. I have made my neice very thin, once by having her walk right to left as I took an exposure, then made her quite wide, by having her walk left to right in another exposure. I have also noted curving buildings just like those in the Tulsa picture.
I think I'm certain that these pictures would have been made on a swinging lens camera.
I have never seen a Cirkut camera, does anybody out there know what direction they swing from. The lens on the camera that took the picture of the woman walking, appears to be one that swings from left to right.
Mick.