Thanks for starting this thread, Ningauble. I just picked up this volume, and wondered if the text is error-free. I'm glad to find this commentary.
You're welcome.
Would it be appropriate here to also include problems in the S. T. Joshi notes?
No problem -- that's what I do, except I don't set those errors apart from those of the story.
The Case of Charles Dexter Ward
Joshi 490.9: It first appeared in Beyond the Wall of Sleep (1943). ] Weird Tales, where it was serialized (in abridged form) in the May and July 1941 issues. The first complete publication appeared in Beyond the Wall of Sleep (1943).
Since the WT appearance was abridged, I don't think STJ counts it. He's certainly aware of it.