site of the body. In 1960, Remington Bristow, an employee of the medical examiner's office who doggedly pursued the case until his death in 1993, contacted a New Jersey psychic, who told him to look for a house that matched the foster home. When the psychic was brought to the Philadelphia discovery site, she led Bristow directly to the foster home. Upon attending an estate sale at the foster home, Bristow discovered a bassinet similar to the one sold at J. C. Penney. He also discovered blankets hanging on the clothesline that were similar to the one in which the boy's body had been wrapped when they discovered him. Bristow believed that the boy belonged to the stepdaughter of the man who ran the foster home, and that they disposed of his body so the stepdaughter would not be exposed as an unwed mother. However, the police had established that all the foster children were accounted for, and a reexamination by police investigators confirmed that the family were likely not involved. In 1998, Philadelphia police lieutenant Tom Augustine, who was in charge of the investigation, and several members of the Vidocq Society (a group of retired policemen and profilers), interviewed the foster father and the stepdaughter (whom he had married). The foster home investigation was closed. The woman known as Martha or "M" Another theory was brought forward in February 2002 by a woman who identified only as Martha, or "M", who stated her parents bought the boy and murdered him. Authorities considered her story plausible but were troubled by her testimony, as she had a history of mental illness. She stated her mother and father purchased Joseph from his birth parents in the summer of 1954, after which he was subjected to physical, sexual and psychological abuse. Authorities were unable to verify her story. Neighbors who had access to Martha's house during the time period denied that there had been a young boy living there and dismissed Martha's claims as "ridiculous." Other theories Forensic artist Frank Bender developed a theory that the victim may have been raised as a girl. The child's unprofessional haircut, which appeared to have been performed in haste, was the basis for the scenario, as well as the appearance of the eyebrows having been styled. In 2008 Bender released a sketch of the unidentified child with long hair, reflecting the strands found on the body.