Two-Needle Sock Knitting Patterns - In the Loop Knitting
Ravelry: Easy Socks Two Needle pattern by Katerina Mushyn
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
How to Knit Socks With Two Circular Needles
Ravelry: Two Needle Socks pattern by Katerina Mushyn