Daniel, it could just be that TROVE hasn't done a great deal of digitising past about 1954??

I'll really have to try hard to recall the Colin years - most of the records I used to keep have been "lost" in my many moves.

He definitely performed at the Governor Broome FC.   
I believe the pub, which was over the Horseshoe Bridge in James St, North Perth, was a brothel as well - but a great folk club! (and run by Geoff Morgan). Some disgruntled customer burnt the Pub down in the late 70s I think. (I was overseas by then).

He was also on at The Stables FC, behind the old Mount Hotel, and started c.1972? by my mate, Jan Hendry. (Not long after, she also started a relationship with Colin.)
I'm pretty sure I remember a concert with Colin out at the Uni too, probably at the Octogon Theatre there. In fact, that could have been my "Davey Lowston" Colin experience ....

He may have been at the Shaftsbury too, but then again, that was mainly Irish trad.

However, the WAFF (WA Folk Federation) could well have some records from the 70s and should at least have a full set of "The Town Crier" magazine, detailing the 70s folk scene.

Daniel, if someone could help you locate Shayna Karlin (Stewart?) - maybe Margret RoadKnight? e.g. - she could certainly elaborate on Colin!

G'Luck.
Cheers,
R-J