I looked at the Macquarie University Library online catalog and found this item listed as "Temporarily Unavailable." I asked what that meant and got this reply:

"The stack a/v material is kept in our Rare Book Room, a closed area in our
basement. One of the overhead water ducts ruptured in this room, wetting
part of the collection. It has been made 'Temporarily unavailable' while our
conservators examine each piece that was damaged to see if it can be
repaired.

"The conservators anticipate that the evaluation and repair of the material will
take months."

I don't know how to square this with Bob Bolton's information, above.