One poster:

Not any Lewis scholars worth listening to. Lewis himself said in so many words it’s NOT an allegory.

Another: I’d very much like to see a cite for this .. Not saying I disbelieve you, just asking for chapter and verse, as it were ..

A third:

OK, here it is.

C.S. Lewis and allegory.

Source: Carpenter 1978:30.

Lewis wrote to Tolkien on 7 December 1929, after reading Tolkien’s poem on Beren and Luthien, “The two things that come out clearly are the sense of reality in the background and the mythical value: the essence of a myth being that it should have no taint of allegory to the maker and yet should suggest incipient allegories to the reader.”