 "Imprisoned with the Pharaohs" has been cited as an early influence on Robert Bloch, which is particularly evident in his tale "Fane of the Black Pharaoh".Although Lovecraft himself refers to the real sphinx as a god of the dead, Bloch expanded upon the mythos and claimed that the sphinx in "Imprisoned with the Pharaohs" was actually Nyarlathotep, an Outer God and Lovecraft creation.The idea of a twist ending, where a terrible discovery is made worse by the realization that it is only part of a larger horror, was used again in "The Shunned House", written later that year.