A while back I noted here that the Publishers Weekly is online at Archive.org for 1872-2016. Now comes a British equivalent, British Book News in a run from 1940-1993. The upload appears not to be complete yet, though probably will be in a few days. Useful for tracking down exact publication dates, in terms of possible influences of writers on other writers.
Cover shows “Tomb of Thomas Sayers” in Highgate Cemetery, picture made by Fay Godwin circa 1980. “Sayers was a famous bare-knuckle fighter and the first to be declared ‘World Heavyweight Champion’. The giant dog is his pet, Lion”.