These family photographes are treasured keepsakes.
keepsake definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
something kept, or to be kept, for the sake of, or in memory of, the giver, an event, etc.; memento
keepsake definition by American Heritage Dictionary
Something given or kept; a memento.