When we were growing up, the amount of Jewish New Years' cards that arrived daily was more than we knew what to do with. We used the prettiest and most interesting of those that came to decorate our Succah. Right now there is an online exhibition that takes a look at some of the ways that Jews before, during and immediately after the Holocaust marked the Jewish Holidays. This includes a collection of Jewish New Years' cards from before, during and after the war. There is also a moving testimony about using a shofar on Rosh Hashanah in the ghetto, the story of a shofar made in secret, blown in a forced labor camp, and kept hidden even when in Buchenwald, and a Jewish Calendar created in one of the camps listing the weekly Torah portion and Jewish holidays.