In my opinion "Margaret Littles" is an interesting piece of Detroit Soul, to which I have my own theory (please feel free to add any constructive thoughts). John Anderson pretty well had a lot of stuff off Popcorn Wylie, and then subsequently others followed(e.g Guy Hennigan) yet nobody turned up a copy? Someone then commented to me about the vocal, saying that "Popcorn" would never have used a vocalist this poor, with all the talent literally on his doorstep, whch, if you forget the superb backing and concentrate on the vocals, it's no Pat Lewis/Martha Starr/Rose Batiste!! Now in BASIC financial terms there are Two ways of having a record released, the company records you, or you pay them to record you, often referred to as a "custom" record (e.g. The Vondells, on "Airtowns" custom subsidiary) and you therefore get the number of discs you paid for and f*** off with them. I think that Margaret did just that, hence, apparently no copies at the Wylie household, as he was paid to do a job.
As far as New discoveries go, the "Two Plus Two" on "Velgo" was a surprise when I first heard & saw it about 5 Years ago, now how did that one remain hidden!
Des Parker