If it helps any....the jig in the last photo was definitely not an Oak Park jig. Rockler now sells a blue version of it. It is a small parts holder for use on router tables and table saws. It also has the angled bar on it's side to allow it to ride against a fence when angled cuts are needed.
I have one of the yellow ones. I don't remember where I bought it, but it has proven to be great for holding small parts to keep your fingers and hands safely away from the cutting point. I added some 80 grit sticky back sand paper to the part holding surfaces, but that is the only improvement that I've made to it. A 2 screw wooden clamp makes a good alternative to this for those on a tight budget, but this jig can be used for a few more holding purposes than the 2 screw clamps can.
Central North Carolina