Now that I see this, I remembered the John Mehegan books use a similar style too. Sometimes below the staff, sometimes numeric analysis in the staff, below, or just own its own. His first book from 1959 is relatively important from a pedagogical standpoint as it was one of the first books to teach jazz improvisation. My copy is the 1992 revision, but here are a couple of pages showing some of his chord styles. (sorry for the crummy cell pics)
