I had a feeling this was going to get complicated
But under the 'rules' laid down (as Steve mentions above), then I do have to agree with him on all the above... although I'm not quite sure about the reasoning behind the Garland Green track, as strictly speaking it was still out on an LP prior to gaining a release on a 45 - for quite a few years at that.!
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As far as I can find out, the Contours "Baby hit and run" was released on TMG 886 in February 1974
But the LP on Music For Pleasure - I have conflicting dates, some say January 1974 and others say May 1974
But I still seem to think it was played originally from the LP and later issued on a 45, so we could still do with a bit more info to confirm one way or another which is actually correct.