Address Book

Adison

Found: examine the License1
Uses: allows travel to your apartment

Chicago

Found: examine the Timetable
Uses: allows you to travel to the train station in Chicago

Cottage

Found: examine Card
Uses: allows travel to Sugar Shack's apartment

Morgue

Found: Examine the Newsclip3 or Newsclip4 after purchasing it
Uses: allows travel to the Morgue

Peoria

Found: examine the Newsclip1
Uses: allows travel to Joe's Bar