Article Photos: Trick-or-treaters show off personalized costumes in search of candy

"Tyler" receives candy from Brieanne Nguyen as Positive Tomorrows kids trick or treat through the offices of the Oklahoma Medical Research Foundation. Paul Hellstern, The Oklahoman <strong>PAUL HELLSTERN - Oklahoman</strong>

"Tyler" receives candy from Brieanne Nguyen as Positive Tomorrows kids trick or treat through the offices of the Oklahoma Medical Research Foundation. Paul Hellstern, The Oklahoman PAUL HELLSTERN - Oklahoman