Boye Pocket Guide Teach Yourself Crochet" /> Boye pocket guide teach yourself crochet set Includes -inchi taught myself to crochet-inch pocket guide by boye and aluminum crochet hook size g (4-1/4 mm) Pocket guide includes simple instructions and clear diagrams Founded in 1906, Boye Needle Company was the first American manufacturer of crochet hooks and knitting needles.