A Derleth: "The Sleepers," and, w/ M Schorer, "The River," "The Black Castle," and "The Turret Room"

I haven't been keeping it a secret--I'm trying to read a story from each issue of Weird Tales, the famed magazine that was the vehicle for some of the most famous work of such giants as H. P. Lovecraft and Robert E. Howard and the early work of breakout successes Robert Bloch and Ray Bradbury, as well as the showcase for the writing of many less famous but well-loved members of the speculative fiction community like Edmond Hamilton, Leigh Brackett, Henry Kuttner, C. L. Moore, and Manly Wade Wellman. And the list goes on. One name that belongs on the list is that of August Derleth. Today we read four stories that appeared under Derleth's name in 1927 issues of Farnsworth Wright's unique magazine of the bizarre and unusual. The pages of Weird Tales credit one of these four as a collaboration with Marc R. Schorer AKA Mark Schorer, and isfdb suggests that the 2009 Derleth collection The Sleepers and Other Wakeful Things labels two additional stories as Derleth/Schorer collabs, though…