Hammonds of Hull, a large department store, produced this very comprehensive book about rug-making. Luckily the purchaser made a note of the date on the front cover. The booklet covered several different methods of rug-making including latch-hooking. Not all pages are reproduced here. It's worth visiting the full size images of 2-page spreads on Flickr (which also include adverts for knitting and crochet wool).

See Flickr where images and patterns can be downloaded at full resolution for your own use.