J. D. has engaged for many years with Lovecraft's reading. I've focused on C. S. Lewis's reading.*
Lewis writes infectiously all his life about his enjoyment of reading. I've written about, I suppose, over 50 books that Lewis commented on or, at least, that were in his library as catalogued a few years after his death. Some of the books may have come from his wife's collection -- although she didn't write sf or fantasy herself, she hung out with people who did (such as Fletcher Pratt).
Here's something, from a piece on de Camp and Pratt's
Land of Unreason, on how Lewis's library overlapped so much with the Ballantine Adult Fantasy series that Lin Carter started editing a few years after Lewis died (1963):
Land of Unreason is one of a bunch of books Lewis owned that were to be reprinted in 1969-1974, when Tolkien's American paperback publisher, Ballantine, cast about for additional material for the fantasy market. Lewis's library and the approximately 60 titles of the Ballantine Adult Fantasy series, edited by Lin Carter, both include William Beckford's
Vathek, five James Branch Cabell books,* Chesterton's
The Man Who Was Thursday, F. Marion Crawford's
Khaled, Roger Lancelyn Green's
From the World's End (the Ballantine edition was called
Double Phoenix and included a work by another author), Rider Haggard and Andrew Lang's
The World's Desire, Haggard's
The People of the Mist, William Hope Hodgson's
The Night Land (two volumes as printed in the Ballantine series), George MacDonald's
Phantastes and
Lilith (also some shorter MacDonald fantasies, gathered by Lin Carter for a book called
Evenor), George Meredith's
The Shaving of Shagpat, Hope Mirrlees'
Lud-in-the-Mist, and William Morris's
The Water of the Wondrous Isles and
The Wood Beyond the World. (Interestingly, Morris's
The Well at the World's End, praised by Lewis, was not in the 1969 catalogue of his library. Perhaps he owned a copy that was later acquired by someone as a keepsake.
The Well was reprinted by Ballantine in two volumes.) Also, the Lewis library included eleven titles by Lord Dunsany, an author mined for six Adult Fantasy releases. Richard Hodgens, a member of the New York C. S. Lewis Society, translated a portion of Ariosto's
Orlando Furioso (“Vol. 1:
The Ring of Angelica”), the whole of which Lewis read in the original Italian. The Lewis book collection also included fantasy by Mervyn Peake, E. R. Eddison, and David Lindsay that Ballantine reprinted just before the launching of the Adult Fantasy series proper. Lin Carter would have been impressed by Lewis’s collection. Most of the material reprinted in Carter's series that Lewis did not own belonged to the American
Weird Tales magazine tradition (e.g. four volumes of stories by Clark Ashton Smith) or had never been published before (e.g. Sanders Anne Laubenthal's somewhat Charles Williams-y
Excalibur or Joy Chant's somewhat Lewisian-Tolkienian
Red Moon and Black Mountain).
The Lewis library catalogue lists two other books by the co-author of
Land of Unreason.
The Well of the Unicorn (1948) is listed as by G[eorge]. U. Fletcher - - the pseudonym used for this book by Fletcher Pratt. Pratt's
World of Wonder (1951) is an anthology. Such gatherings of science fiction and fantasy stories were then uncommon publishers’ fare, although the Lewis library included two of the earliest ones,
Strange Ports of Call (1948), edited by August Derleth, and Donald A. Wollheim’s
Pocket Book of Science Fiction (1943).
.......I realize this thread is for discussion of HPL, CAS, REH, but I thought this would be a worthwhile tangent.
*I wish we knew more about J. R. R. Tolkien's avocational reading. We have only one book of his letters (it is a superb book); perhaps if we had a more complete collection of his letters, we would find some intriguing book talk. However he doesn't seem to have written a lot of book chat, unlike his friend Lewis. Still, there are interesting discoveries to be made as regards JRRT. For example, from the critical edition of his extremely important treatise
On Fairy-Stories, I learned that Tolkien had read M. R. James's
Ghost Stories of an Antiquary. It is possible that he was influenced in the creation of Gollum by a McBryde illustration for James's "Canon Alberic's Scrap-Book."
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