The Church Street Post Office in Manhattan processed the mail for the World Trade Center. After the September 11 destruction, curators at the Smithsonian National Postal Museum debated whether to collect any objects related to the tragedy. Immediately following the horrible events, historian Nancy Pope was determined that they not preserve any artifacts. It was a graveyard to her, not a place to gather museum objects. She and others eventually decided it was a historical event that needed to be documented and the museum obtained several items and also the recollections of one of the postal carriers on site. The zip codes used for the World Trade Center were withdrawn from use. The museum has a postal handstamp bearing the September 11 date and zip code 10007.