If you click on the image above, then zoom in on the full size version, you will see that there is some writing on the control panel near the mission timer.
I would like to think that this is original writing from the astronauts during the mission, but I have no idea if that is the case.
Just sneaking into the bottom left of this image is the Apollo Guidance computer’s display and keyboard assembly (DSKY). There are two of them onboard the Apollo command module. The second DSKY can be seen in photo 8, as is used when operating the optical system used for navigation.
My big regret with this image is that it does not show the O2 tank fan switches which triggered near disaster for the Apollo 13 mission. These two switches are located just to the right of the H2 fan switches, but are hidden from view by the crew couch attenuation strut at the right of the image.
