That makes sense, thank you! The pictures are essentially the same as those you posted, except that someone put them on top of each other and the caption below. But it's only layout, pictures and caption are exactly the same. Unfortunately, I don't know where I have it from.

BTW, seems in the picture in #73 p3 there's a ST 56 with the boxy exhaust baffle on Les Fruh's model. Never saw that baffle on Ed's models. The model in #77 p4 seems to be a major deviation from Ed's line of development with the vertical fin/rudder and the clipped wing. The pusher model is rather similar to Ed's, though, and I hadn't thought that Les Fruh joined in Ed's developments to such an extent. There is one important difference, though: It has no sub fin (and even no protective skid)!

Leaves the question regarding the wing (if you don't remember a previous discussion of this issue).