A 1938 Handweaving News article by Nellie Sargent Johnson explaining how to design three-block patterns on paper. Using an original draft by Mrs. Florence Bratten, it shows how to lay out unit pattern blocks on cross-section paper, mark the center, build a key draft, and draw down the blocks on the diagonal. It then shows how changing block order or unit sizes produces different patterns from the same threading, with drawdown figures and a table comparing two variations.