Bibliography by Nathan Van Patten, appended to Derleth’s article in “Reading and Collecting,” Chicago, 1937.
Bibliography by Nathan Van Patten, published in Kingston, Ontario, Canada, 1928.
Bibliography by Paul Jordan-Smith, published in “For The Love of Books,” Oxford Press, New York, 1934.
Sketch of Machen in “More Authors and I” by C. Lewis Hind, London, 1922 and Dodd, Mead, New York, 1922.
Sketch of Machen in “Buried Caesars” by Vincent Starrett, Chicago, 1923.
Sketch of Machen in “Excavations” by Carl Van Vechten, Knopf, New York, 1922.
Sketch of Machen by Paul Jordan-Smith, in “On What Strange Altars,” New York, 1924.
Sketch of Machen in the Danielson Bibliography, written by Henry Savage, London, 1923.
Sketch of Machen by St. John Adcock in “Glory That Was Grub Street” and “Gods of Modern Grub Street,” London, New York, 192-?