The story behind three photos are you able to solve the questions?

Below are three photographs which on closer inspection have left me with further questions. Are you able to provide the answers?

On the aerial photograph of the ground there is a green area behind the Habbin Stand - is that the old training pitch?  If so, when was it no longer used?  Can anyone remember it or have any stories about the area? Did the players really train there? In what year was the police box fitted on top of the old changing rooms?
 
On the second photograph of Wes Maughan there are supporters sitting on a wall at the edge of the ground. If the photo was at the Abbey when was the wall removed? Does anyone remember sitting on the wall to watch matches?

The third photograph is of a room apparently used as the player bar. Can you remember it? Before that use, I have been told it was a food kiosk.  Can you remember there being one incorporated in the Main Stand?  Did you ever use it