New York: Harper Collins, (1996) dj. Hardcover first edition - A trip to an earlier age in the history of the people of Keltia - the conclusion to this Arthurian trilogy. A weaving of Celtic mythology, science fiction and fantasy. Includes the author's notes and an excerpt from her forthcoming book, Fireheart. 5002 pp. ISBN: 0-061052302.

Wellingborough, UK: The Aquarius Press, (1988). Hardcover first edition - Includes "letters to his friends A.E.Waite, Colin Summerford, and John Gawsworth, and to fellow authors and publishers, [which] illuminate Machen's courageous struggles against poverty and adversity, while reflecting his lifelong preoccupations with literature, the occult, the Christian faith, and Celtic myth." Foreword by Hillary Machen. Chronology. Illustrated with a frontispiece portrait and other photographs. Select bibliography. 256 pp. ISBN: 0-850307821.

Seattle: 47North, (2013). SIGNED - The author's first novel, and the first book in the Thin Veil series, set in the world of Celtic mythology. " Single mom Cedar McLeod leads an ordinary but lonely life, balancing the demands of her career and her six-year-old daughter, Eden. One day, a fight between the two leads to the stunning discovery that Eden can open portals to anywhere she imagines. But before they can learn more about Eden's extraordinary gift, the young girl mysteriously disappears." SIGNED on the title page and dated in 2015. 282 pp. ISBN: 978-1612183077.