A chalkboard has become a significant historical item, paying tribute to the nine men who did not return after 9/11. The board features the names of colleagues lost on that day.

Firefighters and conservators are collaborating to preserve the names on the chalkboard. This effort is part of a firehouse tribute to those who were lost.

Further information on this preservation effort and the story behind the chalkboard is available, providing more details about this powerful piece of history and the work being done to conserve it.