Jeopardy! host Alex Trebek was at the 9/11 Memorial Museum last August to film a category for an episode of the show. (Photo: Amy Dreher)
Each of the 2,983 watercolor squares in Spencer Finch's mosaic represents a victim of the 2001 or 1993 attacks. (Photo: Jin Lee)
(Photo: Amy Dreher)
The Artists Registry is available on the 9/11 Memorial Museum's website. (Photo: Jordan Friedman)
The Historical Exhibition, one of three main parts of the museum, is divided into three sections. (Photo: Amy Dreher)

Call for 9/12 and 9/13 Newspapers

Front pages of national and international newspapers from after September 11, 2001, on display in the 9/11 Memorial Museum’s core Historical Exhibition. (Photo: Jin Lee)
Robert Gray's helmet and respirator are currently in Historical Exhibition 3 in the 9/11 Memorial Museum. (Photo: Jin Lee)
The 9/11 Memorial Museum holds a number of school programs for students of different ages. (Photo: Amy Dreher)
The truck of FDNY Ladder Company 3 is currently located in the 9/11 Museum. (Photo: Amy Dreher)
Museum Director Alice Greenwald (center) holds a flag during the museum's opening ceremony in May 2014. (Photo: Amy Dreher)