Palmer's Jimmy Mack-who was he? From Detroit or Chicago?

[robb_k]

The guy who recorded "My World Is On Fire" for Mike Valvano and Mike Terry in Detroit, and released on Detroit's Palmer Records, was thought by many to have come from Chicago. At least that is what I had always heard over the years. I think it was Ron Murphy, who told me that [[in addition to several others). I always thought he was the Chicago songwriter/arranger/producer-and the same guy referred to in the song, "I'm Jimmy Mack".

Does anyone have any information on this subject? I can't remember if those Palmer cuts were recorded at Sidra's studios, or at Terra-Shirma. But, they were recorded in 1966, and I think that Terra-Shirma started in 1967. But, maybe Ralph knows who the guy is, anyway?

Any help, Ralph? Or Russ? Or any other Detroiters who were around the Detroit music scene at that time?