Furthermore, the S-IVB was brighter that the CSLM because of its size, and many
others saw this instead of the CSLM. We observed the S-IVB and CSLM of Apollo 8 when it was
nearly 200,000 miles from the earth, but they were extremely faint, and with no sign of the SLA panels.

There is a minor mistake in the text here which I didn't see anyone comment on yet. Apollo 8 did not carry a LM so it would not have been referred to as a CSLM. Wouldn't it have just been the Apollo 8 CSM?