Treatise on the art of knitting: with a history of the knitting loom, 1861
"I have used on of your Machines for several months, and in that time have done some very fine worked, and made some very heavy and choice hose."
"I have knit hundreds of pairs of socks and stockings, from the very heavy yarn for the field hand down to the infant's stocking,"
I wonder how heavy "heavy yarn" is? Could it between sport/ DK weight? Hmmmm