Cat with the hand of a child

Story by Mark McLaughlin, published in Rehearsals for Oblivion (Act I). The Narrator receives a cat with a deformed, hairless paw rather like a human hand from an ex-girlfriend. Buying a copy of The King In Yellow at a sale of the possessions of a deceased wealthy man named Kilbain, whose widow believes he has gone to Carcosa, he keeps seeing a wet young man with yellow eyes who calls him to Carcosa...