A Literary Tube Map of London
inthebook.com
inthebook.com
Also- it's obvious that at least some of the novels are older than the tube itself. Canterbury Tales, say. That's from 1400. Also, pretty much all the Dickens ones and I think the Sherlock Holmes stories also.
So the map marks the coincidence of novels and modern tube stations, but not the locations of tube stations actually mentioned in the novels.