From Everyday Fashions, 1909-1920, As Pictured in Sears Catalogs.
I believe "Shaker knit" is what we would call "Shaker rib." There's more about that stitch here and a lot more here.
In any case, I love that "the popular mannish effect" is in there. It's probably not something you would see written as part of a sales pitch today.
