Mine were on Kodak paper, and had the blurb included here as well:

For those who are not subscribers, it reads:

November 2007
APUG Postcard Exchange Round 12
Mamiya 645 Pro-45mm lens--f 8 @ 1/125?
Kodak Plus X @ 125 ISO - HC110 Dil H
Polymax RC III - Polymax T Developer
Kodak Sepia II Toner (incompletely bleached)
This is a somewhat bittersweet exchange for me. I’m using up the last of my Kodak B & W paper, after being a loyal and satisfied user for 40+ years. Hope you think it a worthwhile use, and that you like it - Matt