I'm removing my seats from my 1970 Duster to be recovered. Today, I removed the front bench seat and rear bottom seat. I have not attempted to remove the rear seat back looked closely at the attachment strategy yet as Sunday family dinner took priority. Any advice on how what I need to do in order to remove the rear seat back?

On another note, I briefly looked through the service manual that I had for 1972 Duster prior to removing any of the seats today and realized there were no interior service instructions in the book. Why is that?