I thought it would of interest for all of us felters to learn know the history of felting. This site offers us a well rounded history of felting.  http://en.wikipedia.org/wiki/Felt This following  site also gives us history and  today felting methods.  http://www.fuzzygalore.biz/articles/fulling.shtml
Have you read?
Wool Blends for Felting – Mixing Fibers for Better Texture and Strength
You know how every felter eventually ends up with a pile of leftover bits — some soft Merino, a pinch of coarse Romney, maybe even a silky alpaca tuft or a random batt from that one fiber fair you couldn’t … Read More ...