The National Center for Missing and Exploited Children is again asking for the public's help to locate Louis Mackerley, who was 7 years old when he disappeared June 7, 1984, from Allentown.

Louis was last seen between Fourth and Gordon streets, traveling between his home and the home of a friend.

At that time, Louis was missing four front teeth. He was wearing a maroon and white striped shirt, blue pants, pink socks and brown shoes. His photos are shown when he disappeared and age-progressed 33 years.

The public is urged to call 1-800-THE-LOST (1-800-843-5678) or Allentown Police Department's Missing Persons Unit at 610-437-7721 with any information concerning the disappearance or current whereabouts of Louis. Calls may be made anonymously.

Louis' poster may be viewed at missingkids.com/poster/NCMC/601804/1# poster.