A May 1942 Handweaving News article by Nellie Sargent Johnson on modern variations of the M's and O's threading on four harnesses. It explains the basic threading and gives fourteen tie-up and treadling variations from a sampler by Helen Hill, plus a second sampler by Clara Stone. It gives yarn and color suggestions, weaving directions for eight sampler variations, and a luncheon set (place mat and napkins) in Double M's and O's with shot counts.