From a letter to Tevis Clyde Smith, April 6, 1925 (“Salaam, sahib: / What ho! I have never . . .”).
As this is a parody of Sax Rohmer’s “The Quest for the Sacred Slipper”, the title was likely a typo, and should have been “The Post of the Sappy Slipper”.
Alternate title: THE POST OF THE SAPPY SLIPPER