This is the only Decca album of theirs which does not have The Rolling Stones anywhere on the cover, inner sleeve, or labels
Actually it does say "The Rolling Stones" on the vinyl disc shown in both the front and back cover photos.
*cough*
Maybe they wanted to minimise the risk of interpreting "The Rolling Stones Let It Bleed" as a declarative sentence. On the inner sleeve, where both parts of it are the same colour, there is a slash between them. (And Let It Be doesn't say "The Beatles" on the front cover either.)
This is mentioned in a fairly funny essay by the British sitcom writer Andrew Collins, called "Big Boys Don't Cry". It's about how he was affected by The Poseidon Adventure, a not so well remembered disaster movie, as a 10-year-old in the mid-1970s. He mentions having had this LP just for track A2.
The Wizard release is on 45cat, with colour images.
"Spinning Rock Boogie" was a No. 21 hit in Britain and was released throughout Western Europe. So there is nothing odd about the originating label, Sonet, licensing it for release in Australia.
It was about this time that Motown started using it. Ending words in "-sville" was stereotypical Beat Generation talk, and I imagine that this was the source equally for both.