Steve, I stand to be corrected, but I'm sure "Tell Me What It's All About" was only available in the UK as an LP track. A great track, and the US 45 on UA looks awesome! Popsike shows that a demo went for $50 two years ago.
I've had a copy of "Keep On Running" by Jackie Edwards on New Zealand Philips, which I found out there whilst on honeymoon - sold it to a mate about 10 years ago. Wonder if his version of "Somebody Help Me" (covered by Spencer Davis) was released on 45, and in which countries?
As a personal fave of mine, there is something about "Tell Me Darling" which really grips me (released on UK Starlite in 1960). Not soul, but just a lovely-sounding ballad.