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

For more information, see:
http://www.archive.org/stream/cihm_08942#page/n171/mode/1up

or

http://eco.canadiana.ca/view/oocihm.08942/3?r=0&s=1#3...

There are two different patterns in Home Work named Square for Quilt.