A 1942 Handweaving News leaflet by Nellie Sargent Johnson on a warp-patterned technique found in ancient Peruvian (Incan) textiles from her own collection. It describes the narrow belt loom, a twill threading on four harnesses with alternating white and dark warp threads, and the lever order for plain background and for picking up pattern threads with pickup sticks. Photographs, side-view sketches of the shed, and a charted diagonal pattern design from an ancient belt are included, with a note about future leaflets on double weaving.