Young women of the 1920s rejected knitting as "women's work." The industry worked hard to win them over with new yarn colors, knitting marathons and contests offering sizable prizes.
The USA enjoyed its first peacetime knitting craze in the 30's, perhaps because of the Depression. Women who wanted fashionable clothing, like European-designed sweaters, hand knitted imitations. Joan Crawford and Katharine Hepburn were knitting. Hollywood even released a knitting book.