It really is a very good website - and I particularly liked the section on the Squadron pigeons. Unfortunately, squadron histories of RAAF units are hard to find outside Australia so most people will be stung by high postage - but that's the cross we plane nuts have to bear
This site is handy to check which squadron histories are generally available - my aim is to win the lottery and then buy them all!
http://www.aviationarchaeology.org.uk/research.htm