Fred Mitchell was apparently a cutlery retailer, who became active in Nelson – a small town near Burnley in Lancashire – in about 1927. Two years later he advertised in Nelson newspapers. At ‘Fred Mitchell’s Cutlery Stall’, Cross Street Open Market, he offered ‘Mitchell’s Wonder Knife’, fitted with a special edge, which cut fresh bread ‘without wasting a single crumb’ (The Nelson Leader, 29 November 1929). So that customers could fit their home up with l....