Mar 152012
In the mid 1960’s, Douglas produced designs for a Manned Orbital Research Laboratory. Much like the later Skylab, MORL was to be based in part on the S-IVb stage. Unlike Skylab, MORL was to be a much more fully integrated space station, with greater emphasis on functionality and less on low cost. It was to have included an internal centrifuge, and surprisingly large solar panels.
Larger versions of these drawings can be had HERE.