Otis Clay was born in Mississippi in 1942, moved to Chicago as a young man and resides there to to this day. He had some minor hits, and then became a reliable club performer, and later an effective community activist on Chicago's West side.
The vocal on "That's How It Is" is a favorite of mine. Hard to believe this 1967 song is not better known:
Love the name of the record label - "One-derful! Records". With that name, too bad it didn't become a major force like Stax or Motown.