Always interesting to look back and see how the future of manned flight was viewed (still with optimism) in those early Apollo years.

It was too bad that Dr. Chapman like may of those later selected, saw their dreams unfulfilled due to the stark economic realities that were beginning to impact the program; even before the first landing attempt. He may very well have benefitted from even a second (now a museum piece) AAP launch not to mention the 12 man concept that was on the drawing boards.

Speaking of Dr. Chapman, here is a link to his blog.

I often wondered why no one (as far as I know) considered a space station consisting of a Saturn V S-II second-stage and a Skylab-type S-IVB upper section. The S-II would, of necessity, have been a "wet workshop" but the third stage, like Skylab, would have been constructed for astronaut occupation. The S-II was certainly capable of putting such a stack into orbit, since Skylab's S-II went into orbit for almost 20 months.

One problem which didn't occur to me when I first thought of this in the late 1970s was residual hydrogen and residual oxygen in the S-II, but if some sort of flushing system had been used, that surely needn't have been a show-stopper. After all, an S-IVB "wet-workshop" had once been considered.