Toe-Up 2-at-a-Time Socks

2-at-a-Time Socks: Revealed Inside. . . The Secret of Knitting Two at Once on One Circular Needle; Works for any Sock Pattern!

addi Turbo Sock Rockets 40-inch (100cm) Circular Knitting Needlee, US 1 (2.50 mm) 775-40-01

Socks from the Toe Up: Essential Techniques and Patterns from Wendy Knits

Getting Started Knitting Socks (Getting Started series)

ChiaoGoo Red Lace Circular 40 inch (102cm) Stainless Steel Knitting Needle Size US 2 (2.75mm) 7040-2

Knitting Circles around Socks: Knit Two at a Time on Circular Needles

ChiaoGoo FBA_CG-7040-1 Red Lace Circular 40-inch (102cm) Stainless Steel Knitting Needle; Size US 1 (2.25mm) 7040-1

The Sock Knitter's Handbook: Expert Advice, Tips, and Tricks

Custom Socks: Knit to Fit Your Feet