The Mansion of Unholy Magic

From Author Wars - https://authorwars.com/books/the-mansion-of-unholy-magic-86792.html

Overview:

Unknown. Weird Tales, October 1933 (Unknown, Seabury Quinn, Popular Fiction Publishing Co., $0.25, 132 pages, pulp, MAGAZINE)
Unknown. The Compleat Adventures of Jules de Grandin, Volume 2 (Unknown, Seabury Quinn, The Battered Silicon Dispatch Box, Hardcover, Collection)
Unknown. Startling Mystery Stories, Summer 1966 (Unknown, Seabury Quinn, Health Knowledge, Inc., $0.50, 132 pages, digest, MAGAZINE)
Unknown. Weird Tales, October 1933 (Unknown, Seabury Quinn, Girasol Collectables, $35.00, 132 pages, pulp, Anthology)
Unknown. A Rival from the Grave (Unknown, Seabury Quinn, Night Shade Books, ISBN-10: 9781597809689, $34.99, xx+452 pages, Hardcover, Collection)
Unknown. Weird Tales (disc 3, part 2) (Unknown, Seabury Quinn, unknown, Anthology)
2018 . A Rival from the Grave (2018, Seabury Quinn, Night Shade Books, ISBN-10: 9781597809696, $19.99, pages, ebook, Collection)
2020 . The Best of Jules de Grandin: 20 Classic Occult Detective Stories (2020, Seabury Quinn, Night Shade Books, ISBN-10: 9781949102260, $24.99, 560 pages, Hardcover, Collection)
2020 . The Best of Jules de Grandin: 20 Classic Occult Detective Stories (2020, Seabury Quinn, Night Shade Books, ISBN-10: 9781949102420, $16.99, ebook, Collection)
2023 . A Rival from the Grave (2023, Seabury Quinn, Highbridge / Recorded Books, $24.49, digital audio download, Collection)