The Corner Start Afghan Tutorial. Also known as C2C, Corner to Corner, Corner Box and Diagonal Box Stitch. Now the original tutorial is available as a free PDF download. I apologize for the poor photo quality, it was captured from my 10+ year old, now defunct personal website. Think of it as a piece of vintage internet crochet history. 🙂 Link of the pattern is below!
Crochet by Lauri Bolland
Corner to Corner C2C Corner Start Tutorial [ Free Crochet Pattern ] pattern is available here.