Jeanne Boylan
Jeanne Boylan is the investigative interviewer and criminal case artist best known for her drawing of the Unabomber, later identified as Theodore Kaczynski. It is easily the most recognizable composite ever drawn, however, for all its exposure, Theodore Kaczynski was identified by his brother who recognized Kaczynski's writing. 1
Her drawing in the case of Polly Klaas Polly Klaas [...] was wildly distributed, but when the killer, Richard Allen Davis, was arrested for drunken driving nineteen days later, the officers didn't recognize him from Boylan's composite. The actual identification came from a palm print and the identification of Polly's clothes. [http://www.crimelibrary.com/serial_killers/predators/klaas/3c.html ]
The composite sketch of John Doe #1 by an FBI artist led to the identification of Timothy McVeigh. The profile drawing of John Doe #2, sketched by Boylan, and the original composite of John Doe #2 did not lead to identification. [http://www2.indystar.com/library/factfiles/crime/national/1995/oklahoma_city_bombing/ok.html ]Oklahoma City bombing
Susan Smith, the young mother from Union, S.Carolina that murdered her two young sons on October 25, 1994, initially provided a profile composite sketch for the South Carolina Law Enforcement Division (SLED) forensic artist, Roy Paschal. Paschal felt she was being deceptive in the composite drawing and reported his misgivings to his department. Although Boylan flew to South Carolina, she did not interview Susan Smith nor draw a composite on the case.2