There are many informative books about Lady Anne and Wilfrid Blunt, Lady Wentworth, The Crabbet Arabian and other Arabian studs of the time and many personalities with views on the Arabian horse. Some of these books, even quite recently published, are in very short supply , but can be found on Ebay, Abebooks, Amazon and other places, with a little patience.
Luckily a reasonable number of rare and very informative books from the catalogue below have been digitised and can be downloaded freely for personal use. Just follow the links where shown. Current day reprints are also available.