I have the Delanieur 45 on Teri De, I know it's a later release than the ones you are interested in, but I was also under the impression it was Len Jewel's Daughter. - Maybe I read it in Voices sometime?
Anyway, more to the point, I came across the Visitors 45 on Tangerine today "My love is ready and waiting" and lo and behold, it's got Delanieur music in the credits!
Maybe you already knew that, but I hadn't noticed it before...