This follow up from Steve Redick relates to a rent post Chicago 5-11 at 1520 S Indiana in 1974:
I sent this out a while back and just got some additional info to share. Old time fan Chuck Bleck was working in the insurance industry at the time and prepared an extensive diagram of the fire and was kind enough to share it. Chuck also sent a copy of the report in Turnout magazine from the fire as well as some other good old CFD info.
** a note to our younger readers who might be wondering about the odd looking type of the two summaries above … they were created with a typewriter