Are you looking specifically for Yiddush or period songs or are you open to more contemporary songs? If the latter, a personal favorite of mine is Fred Small's "Denmark 1943". There's also my own setting of Anne Frank's story:

Through A Child's Eyes
by: Gary Ehrlich © 7/95

Through a child's eyes, a tale of hope against despair.
Through a child's eyes, a tale of lives cut short.
The doors that will not slam shut, the walls that won't close in.
The good that lies within the heart, that won't let evil win.
The horrors brought by people who let hatred rule their lives
I see the fires burn through a child's eyes.

Through a child's eyes, I see her words take flight again.
Through a child's eyes, The fam-'lies live once more.
Across the years her story will briefly take the stage.
Their joys and terrors passing by, a diary's turning page.
While heroes from the outside try and help them to survive.
I see them live again through a child's eyes.

Through a child's eyes, I see the tears are falling down.
Through a child's eyes, I see the shock and pain.
A soul is deeply moved by a young girl's tragic fate.
A mind has learned from history what happens when we hate.
I feel hope that the millions will not once more have to die.
And see the future born through a child's eyes.
I see the future born through a child's eyes.