This paper discusses the contrast between the near zero notice taken by Adam Smith’s contemporaries of his use of the “invisible-hand” metaphor, followed by the virtual absence of any notice of it for a just short of a century after his death in 1790 until it went “viral” following Paul Samuelson’s Economics textbook after 1948. - http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2143277