A July 1947 Handweaving News article by Nellie Sargent Johnson presenting Ada Dietz's method of generating four-harness threading drafts from algebraic formulas: the square of a binomial, the cube of a binomial, and the square of a polynomial. It gives threading arrangements for a 239/240-thread warp, treadling orders for eight photographed samples, and weft materials used. It also suggests adapting the method to summer and winter and crackle units.