Hi JoTH
Difficult one - it is a very scarce book and you may be lucky to come across it.
There seem to be several copies in different records offices - depends really if you just wanted to view one for information or keep it.
If I was in your position and wanted a copy to keep I would be buying a copy at any price. Once they are out of print, they are a devil to find.
There are several companies on line that will do booksearches in shops/on line for you but then costs start escalating!

If you are prepared to wait a lonnnnng time you may get a cheap one

Guess only you know what a copy is worth - but Happy Hunting
Su