Here is a comprehensive list of all the books Ophiel recommended to his students.
The following abbreviations will be used to indicate which Ophiel book(s) he made the reading recommendation.
Bucke, "Cosmic Consciousness." - OC.
Ingalese, Richard, ALL OTHER BOOKS - but esp. the two listed below - OC.
Ingalese, Richard, "(The) History and Power of the Mind." - OC.
Ingalese, Richard, "Occult Philosophy." - OC.
Coming soon --- UPDATE