The Contact List contains everyone who's ever contacted the FBI regarding aliens or the Visitors. Erica Evans stole the list from the Visitor Threat Assessment Joint Task Force. ("There Is No Normal Anymore") Erica and Jack Landry cross reference the list against other sources, separating the contacts into "crazies," "deceased," or legitimate contacts to follow up with. Using this method, Jack discovers the identity of Georgie Sutton. ("A Bright New Day")