Lucas Berstein and Erica Feinstein, elementary school classmates in Pennsylvania, assembled this collage of nearly 3,000 distinctive U.S. and international postage stamps, one to memorialize each victim of the attacks. A thin plastic film bearing the names of victims overlays the stamps. For several years, the collage was exhibited at Berstein and Feinstein’s school. Berstein’s uncle, Morton H. Frank
, was killed on 9/11 while working for Cantor Fitzgerald on the 104th floor of the North Tower.