This is a thread where all the known crossovers between REH and H.P. Lovecraft can be recorded.
Please use this format below.
(Subject)+(REH/Story title) + (HPL/story title) + Details/commentary
Example:
Serpent men of Valusia + REH/The Shadow Kingdom + HPL/The Haunter in the Dark.
The serpent men of valusia worshipped one of the great old ones trapped inside the shining trapezohedron that could cut through time and space. Apparently ended up in Rhode Island where a one Robert Blake went insane from it.