In photo #3

Notice the nose cone on the Farside X and the Ranger. It comes to a point. That changed as time went by to a blunt, rounded nose. And then to a shorter and even more blunt plastic nose later on – which continues to this day. I kind of liked the original.

As for the DynaSoar, I think it's just a acale model someone built. I've never seen even a mention of one (as a kit prototype) anywhere before. Maybe someone else has.

rraeford