The different configurations of the Saturn IB and the planned missions for each.
Several things of note:
This graphic shows the planned mission configuration for AS-201 through AS-212. The AS-2XX was the mission nomenclature before AS-204 was changed to Apollo 1. This change was requested by the Astronauts' wives to honor their husbands, who lost their lives in the fire. The plans before Apollo 1 disaster deserve its own post.
Only AS-204/Apollo 5 launched carrying only the Lunar Module (LM-1). There were plans for a second mission but after the success of the first, it was not needed.
After AS-205/Apollo 7, the rest of the Saturn IBs were placed into storage and refurbished for the Skylab and ASTP missions.
It's interesting AS-212 was scheduled to carry both an Apollo module and a Lunar Module as the Saturn IB did not have enough Delta-V to carry both into orbit. Nor did it have enough to launch a fully fueled Apollo CSM, as all missions carrying it had to be partially loaded.
Missing from this list is SA-213 and SA-214. Both were not completed before funding ran out and what was built (the S-IB stage), was scrapped. SA-212's S-IVB was converted into the backup Skylab space station (aka Skylab B) and its S-IB stage was scrapped.
SA-215 and SA-216 were cancelled before they were started in July 1968.
Date: 1968
NASA ID: 0100803
source