Cam-O Corp. was a camera maker in Kansas City, Missouri (USA).
Camera was sold in a 'kit' containing the camera, a tripod, light stands and heads (incandescent), a background stand and a window-shade-type painted backdrop. Everything you needed. And it was all packed into a rather large carrying case. It was intended mostly for the school photographer - those individual shots we all remember.
There was no focus allowed for - other than moving the camera back and forth. Lens was (at least on the one I have) a 4 1/2" Wollensak Raptar in an Alphax Heavy Duty shutter.
Some touches to the camera are elegant, others pretty crude.
The Kansas City. MO. company seems to have made no great impression on the camera world since history about the company is pretty much non-existent (at least on the Web).