Skylab Illustrated
This illustration shows a cutaway of Skylab with all its major components. The Command and Service Module was a hand me down from the Apollo program that was used to ferry the crew to the station. The Apollo Telescope Mount was a solar observatory and the Orbital Workshop, which housed the work areas, living quarters and most of the supplies. The workshop from the backup Skylab is on display at the National Air and Space museum.
Image: NASA