http://www.missingkids.com/

A National Campaign for Missing Childrenís Day

  For the past 15 years, families and child advocates
  nationwide have observed National Missing Childrenís
  Day on May 25th.  Proclaimed first by President Ronald
  Reagan in 1983 and honored by every administration since,
  May 25th is the day 6-year-old Etan Patz disappeared from
  a New York City street corner on his way to school in
  1979.  His case remains unsolved and is an annual
  reminder to the nation to renew efforts to reunite missing
  children with their families and make child protection a
  national priority.

  One reason Etan Patzís case quickly received
  the attention of local and national news media
  -- even before cases of missing children
  routinely garnered such attention -- is that his
  father is a professional photographer, and
  Etanís black and white portraits were quickly
  disseminated in an effort to find him.  His case is a
  reminder to all parents of the need for high-quality pictures
  of their children, for use in case of an emergency, and for
  the need for everyone to pay close attention to the posters
  and pictures of missing children that in the 1990s have
  become commonplace as a tool to help in the search for
  missing children.

 
  Even after almost two decades, people can be unsure
  whether they can actually play a role in recognizing a
  missing child from a poster and help to reunite that child
  with his or her family.  Picture Them Home is a new
  campaign to raise awareness about the power of pictures
  and their importance in the search for missing children.
  One in seven children featured in the National Center for
  Missing and Exploited Children's photo-distribution
  program are recovered as a direct result of someone in the
  general public recognizing the child in the picture and
  notifying authorities.  Pictures work, and if more people
  took the time to look at them, more families would be
  reunited.

 
  How can you help?  Itís simple and takes very little time.
  Whenever you pass a poster of a missing child, really look
  at it, whether it comes in your mail, is posted at your local
  post office, or you see it online.  Donít think you canít
  helpÖyou can.  Make an effort never to be complacent
  about studying these pictures.  One day, you might help
  bring a child home.

  Next, make sure you keep current, high-quality pictures of
  your own children, regardless of their ages, and update
  them at least annually.  A recent poll of law enforcement
  found that they consider pictures to be the single most
  important tool in the search for missing children.