Knitting Two at a Time Socks on One Needle or Two | The Chilly Dog
2-at-a-Time Socks: Revealed Inside. . . The Secret of Knitting Two at Once on One Circular Needle; Works for any Sock Pattern!: Morgan-Oakes, Melissa: 9781580176910: Amazon.com: Books
HAND MADE - RUKODELKY: Socks Made With Two Knitting Needles For Advanced Beginners