Logan, John, 1961- (Personal Name)

Showbiz, 1993: label (John Logan)

Online copyright file, 05-29-96 (Logan, John, 1961- )

His Never the sinner, 1999: CIP t.p. (John Logan) data sheet (screenwriter; other plays include: Hauptmann; The view from Golgotha; Speaking in tongues)

Wikipedia, January 23, 2015 (John Logan; born John David Logan, September 24, 1961, San Diego, California; American playwright, screenwriter, and film producer)