I've possibly mentioned this before but when my mother was a child, her mum was employed by Bairnswear to test new knitting patterns for baby clothes, using their yarns. Grandma was very skilled in knitting, crochet and needlework of all types and this was work she could do from home. Grandma made up the garments, noting any errors in pattern instructions and observing the required tension. When completed, the finished garments were displayed in the window of Griffin and Spalding, together with patterns and wool which could be purchased from the relevant department within the store.