Salmo,
My regrets -- I left only half of what you asked. You can find my work easily at either
http://www.activeangler.com/flyfishing or
http://www.landbigfish.com/flyfishing
Simply cursor down to my name and hit "Fly Fishing for the Rest of Us."
I did not in any of the books content go into how fly lines were previously classified before AFTMA; however I will be happy to do so if we have trouble figuring out your bamboo rods' markings.
Doug