H. P. Lovecraft, letter to August Derleth, December 10, 1931; cited in Joshi and Schultz, p. 238. cite: has all the defects I deplore—especially in point of style, where hackneyed phrases & rhythms have crept in despite all precautions.... No—I don't intend to offer 'The Shadow over Innsmouth' for publication, for it would stand no chance of acceptance.
Farnsworth Wright, letter to August Derleth, January 17, 1933; cited in Joshi and Schultz, pp. 238–239.cite: I have read Lovecraft's story...and must confess that it fascinates me... But I don't know just what I can do with it. It is hard to break a story of this kind into two parts, and it is too long to run complete in one part.
H. P. Lovecraft. Letters to J. Vernon Shea, Carl F. Strauch and Lee McBride White. ed. S. T. Joshi and David E. Schultz. NY: Hippocampus Press, 2016, p. 378
Chalker, Jack L.; Mark Owings. The Science-Fantasy Publishers: A Bibliographic History, 1923-1998. Westminster, MD and Baltimore: Mirage Press, Ltd. 1998: 705.
Derleth, August. H. P. Lovecraft—Outsider. Crypt of Cthulhu. 1996, 15 (3) [1937]. Robert M. Price (ed.), West Warwick, RI: Necronomicon Press. Original publication: H. P. Lovecraft—Outsider. River. June 1937, 1 (3).
Lovecraft, Howard P. [1936]. The Shadow over Innsmouth. S. T. Joshi (编). The Dunwich Horror and Others 9th corrected printing. Sauk City, WI: Arkham House. 1984. ISBN 0-87054-037-8. Definitive version.