Newly on the Hippocampus Press catalogue, a chunky book of new Machen scholarship titled The Secret Ceremonies: Critical Essays on Arthur Machen. Not yet on Amazon.
Essays which sound like they might be of vague interested to me, re: the possible Tolkien resonances…
* “Of Sacred Groves and Ancient Mysteries: Parallel Themes in the Writings of Arthur Machen and John Buchan”.
* “Sanctity Plus Sorcery: The Curious Christianity of Arthur Machen”.