Two other main sources were obtained roughly 50 years after the events by the investigation of Thomas B. Allen and form the basis for his book on the subject, ''Possessed''. One is the testimony of [[Walter Halloran|Rev. Walter H. Halloran]], at the time one of the last surviving eyewitnesses of the events. According to Rev. Walter H. Halloran, streaks and arrows and words such as "hell" appeared on the boy's skin.<ref name="Washington Post"/> The other is a diary which was kept at the time of the events by a [[Raymond J. Bishop|Rev. Raymond J. Bishop]], another clergyman which became involved in the events after March 9, 1949, several months after it is claimed the initial symptoms occurred. The same diary used by the 1975 ''Fate'' article.<ref name="Mark Opsasnick - Possessed is the only book">{{cite web|url = http://www.strangemag.com/exorcistpage2.html|title=The Cold Hard Facts Behind the Story that Inspired "The Exorcist"|quote= Possessed is the only book to focus entirely on the exorcism of the possessed boy... and is essentially based on two sources: the 26-page diary ... and interviews with Father Walter H. Halloran|publisher =Strange Magazine|accessdate = 2007-12-31}}</ref> | Two other main sources were obtained roughly 50 years after the events by the investigation of Thomas B. Allen and form the basis for his book on the subject, ''Possessed''. One is the testimony of [[Walter Halloran|Rev. Walter H. Halloran]], at the time one of the last surviving eyewitnesses of the events. According to Rev. Walter H. Halloran, streaks and arrows and words such as "hell" appeared on the boy's skin.<ref name="Washington Post"/> The other is a diary which was kept at the time of the events by a [[Raymond J. Bishop|Rev. Raymond J. Bishop]], another clergyman which became involved in the events after March 9, 1949, several months after it is claimed the initial symptoms occurred. The same diary used by the 1975 ''Fate'' article.<ref name="Mark Opsasnick - Possessed is the only book">{{cite web|url = http://www.strangemag.com/exorcistpage2.html|title=The Cold Hard Facts Behind the Story that Inspired "The Exorcist"|quote= Possessed is the only book to focus entirely on the exorcism of the possessed boy... and is essentially based on two sources: the 26-page diary ... and interviews with Father Walter H. Halloran|publisher =Strange Magazine|accessdate = 2007-12-31}}</ref> |