Wool is the only fiber that can be contract-processed in small lots. Cotton? Unlikely. Cotton gins deal in multiple bales of 500 pounds each. Flax? Outside of historical sites and private parties, no flax processing is being done. Silk? Not in the U.S.A.Alden Amos, The Alden Amos Big Book of Handspinning (Loveland, CO: Interweave, 2001) p. 145.
How do I get on that guest list, eh?