“In these years of affliction our readiness to help one another is being put to an especially severe test. May we stand this test as well as did our fathers before us. 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. It must be a source of deep gratification to you to be making so important a contribution toward rescuing our persecuted fellow-Jews from their calamitous peril and leading them toward a better future,” adds the letter, Jewish Business News reported.

The letter is being auctioned by Nate D. Sanders Auctions at an initial value of $10,000.