This pattern can be made with any yarn and a hook size to suit.

For more information, see:
http://archive.org/stream/cihm_08942#page/n184/mode/1up

or
(NOT free)
http://eco.canadiana.ca/view/oocihm.08942/0003#3?r=0&...

Instructions for the different sizes pictured can be found on this project page.