A letter written by famed scientist Albert Einstein in 1939, commending a New York businessman for his efforts to assist persecuted European Jews, is being auctioned at Nate D. Sanders on Tuesday.

The letter, written on embossed Princeton stationary, congratulates Hyman Zinn on the “splendid work” he undertook on behalf of European refugees.

“The power of resistance which has enabled the Jewish people to survive for thousands of years has been based to a a large extent on traditions of mutual helpfulness,” Einstein wrote.

The champion of the Theory of Relativity stressed that during such difficult times, the readiness to help one another is put to the test, though he expressed hope that the Jewish people be able to overcome this.

“We have no other means of self-defense than our solidarity and our knowledge that the cause for which we are suffering is a momentous and sacred cause,” he wrote.

Einstein went on to laud Zinn’s contribution toward rescuing Jews, “leading them toward a better future.”

Auction house owner Nate D. Sanders emphasized the importance of the letter as testimony to Einstein’s devotion to the Jewish people. “This historical letter contains powerful content showing that Einstein was devoted to the Jewish people,” Sanders said.

Einstein’s letter is estimated to sell between $5,000 and $7,000.

The auction ends Tuesday, October 11, 2011 at 5 pm Pacific Standard Time. Bids can be placed online at www.NateDSanders.com or by phone at 310-440-2982.