J.R.R. Tolkien and C.S. Lewis had a pretty legendary rivalry/friendship.
In particular, it's fairly well known that Tolkien aimed for "higher" fantasy, compared to Lewis.
I've heard some people claim that Lewis included the Lantern Waste solely because Tolkien told him something along the lines of "fantasy doesn't have lamp-posts."
Is this true? Is there any record of Tolkien mentioning lamp-posts in fantasy? Is there any official documentation of Lewis including his in response to this?