The slides from Tuesday’s lecture on Fiber are here and the slides on Yarn are here. There are links to suppliers of a range of different fibers and yarns on the HLT wiki. There is more information about measuring fibers and yarns here and here.

Readings
Kadolph, S. (2007), Textiles (11th or 10th Edition), Prentice Hall, Upper Saddle River, NJ
Sections 2 and 3