survivors from all over Europe gathered together to record their memories of the people and towns they had lost, and to document how they had lost them, so that their loss would be the last of that magnitude.
These memories were collated in over 2,000 memorial or “Yizkor” books, one for each town that could gather enough survivors.
They wrote these memories in the lingua franca of Jews of that era, Yiddish, to be sure that Jews anywhere would always be able to read these stories, to connect with their lost roots.