Here’s an empty envelope from HPL to Clark Ashton Smith. How it ended up in Derleth’s box of stamps is simply beyond me. However the return address at the V of the flap is characteristic, and the note is undecipherable to the uninformed, but I am confident the serious scholars will have fun with it. The contents of this envelope has undoubtedly survived in some collection or library somewhere. Your comments would be most appreciated.
H.P. Lovecraft envelope to Clark Ashton Smith