Thank you, Eric. I actually thought the waterbath would work but I didn't want to tell him anything until I ran it here to see what others thought. Of course, I had forgotten about Photoflo. It's only been about 30 years since I had my B/W darkroom.
Yes, they are already developed.
This guy has boxes of really old slides and film of various places from the very early 1900's. In exchange for printing some copies of old maps and such, he has allowed me to scan and print as I desire old slides of Yellowstone Nat Park from around 1900 or so. Transportation then was by stage coach and even the garbage collector wore a derby hat and suit and tie!! I love these old images!
I figure I'll be scanning and printing the B/W film for him as well.