By 1963, Corman had produced several highly lucrative films based on Poe's work, but Lovecraft was not at that time a well-known author; according to Corman on the DVD making-of featurette, the studio forced him to name this movie after one of Poe's poems (and included a Poe epigraph in the credits) so that audiences would believe it to be another film based on Poe's writings.
By 1963, Corman had produced several highly profitable films based on Poe's work, but Lovecraft was not at that time a well-known author; according to Corman on the DVD making-of featurette, the studio compelled him to name this movie after one of Poe's poems (and included a Poe epigraph in the credits) so that audiences would believe it to be another film based on Poe's writings.