The scrapbook of Margaret Gruenbaum, who with her two children was imprisoned in the Theresienstadt concentration camp, is now carefully preserved at the U.S. Holocaust Memorial Museum's David and Fela Shapell Family Collections, Conservation and Research Center in Bowie. (Evelyn Hockstein/For The Washington Post)

The May 9 Metro article “A place to store the mementos of horror” said, “The Holocaust was the systematic murder by the Nazis and their allies of more than 6 million European Jews and others before and during World War II.” Actually, about 6 million Jews and about 5 million non-Jews were murdered by the Nazis. The others included Roma, Jehovah’s Witnesses, gay men, et al. Writing “11 million Jews and others” would more accurately describe the extent of the killing.

Katharine Stephens, University Park