Reliving the atrocities of the Holocaust isn’t easy for survivor Jack Repp, but he has shared his experiences at the Dallas Holocaust Museum and Center for Education and Tolerance for the past 20 years.

The 93-year-old Preston Hollow neighbor, featured in the Advocate in 2011, spent six years at the Radom labor camp and Dachau concentration camp. He was 21 years old when he was liberated. He weighed 69 pounds.

Four months after recuperating, the Secret Service asked Repp to go undercover as a German to bring Nazis to trial. He agreed, putting himself at risk once again.

Rabbi Dan Lewin first heard Repp tell his story at a local Jewish Federation event. Repp’s resiliency and faith immediately struck Lewin, a Preston Hollow writer and adjunct professor at the University of North Texas. He volunteered to write Repp’s memoir, which he hopes to complete by May 1, the day that Red Cross vehicles and American soldiers appeared at the concentration camp 72 years ago.

“He just has an incredible [physical and emotional strength],” Lewin says. “Combined with that, it’s the lack of bitterness he has. He has a famous saying, ‘You take the good with the bad, you mix it up, and you make it all good.’”

Lewin is fundraising to cover production costs, and all proceeds from the memoir will be donated to the Dallas Holocaust Museum.

“The more I spoke to him, the most important it became to preserve what happened,” Lewin says.