Detective Fiction Weekly. Vol. 75, No. 4, April 15, 1933

He may have an opportunity of recommending himself, as a shade, to Zeus, on Mount Olympus itself, since he will most certainly shuffle off this mortal coil at some swift second during the twenty-four hours calendered as the nineteenth of this present month. May you, my dear Manning, be there to see. I may be a spectator myself. The method employed is ingenious and I confess to a slight curiosity to observe how well it works, though, as you know, I never repeat myself.