Selected Letters of H. P. Lovecraft IV (1932-1934)

洛夫克拉夫特經典傑作合輯 譯者：李函 (2022) 鬼屋魔影 - 源於克蘇魯神話的冒險遊戲。 Lovecraft, H. P. Selected Letters of H. P. Lovecraft IV (1932–1934). Sauk City, Wisconsin: Arkham House. 1967

Lexington Books, 2005, pages 409-10. Selected Letters IV（英语：Selected Letters of H. P. Lovecraft IV (1932-1934)）, page 390 A. Merritt's The Metal Monster