There have recently been reports of further incidents, although of a rather indeterminate nature. The current writer was, a few weeks ago, fetching books from the same room. As the only person in the stacks at the time, all was quiet. Even the famous Senate House howling wind was absent. Upon exiting the room, a very slight but definite touch of the hair on top of the head was felt, akin to walking through a cobweb. Upon re-examination of the doorway, no cobwebs were to be found. The 'presence' (if that is what it was) did not give an impression of being threatening or sinister, merely curious.
Another staff member reports fetching books on an adjacent floor recently, and hearing a loud, repeated clicking sound coming from this same 8th floor room. Again, there was no one else present - the person concerned had verified this to be the case.
Riddle: What makes a clicking sound and touches peoples' hair?