Here is a passage from that document:
This was the solemn message I carried to the world. They impressed it upon me so that it could not be forgotten. They added to it, for they saw their position with the clarity of despair. At that time more than 1,800,000 Jews had been murdered. These two men refused to delude themselves and foresaw how the United Nations might react to this information. The truth might not be believed. It might be said that this figure was exaggerated, not authentic. I was to argue, convince, do anything I could, use every available proof and testimonial, shout the truth till it could not be denied.
They had prepared me an exact statistical account of the Jewish mortality in Poland. I needed some particulars.
"Could you give me," I asked, "the approximate figures of the murder of the ghetto population?"
"The exact figure can be very nearly computed from the German deportation orders," the Zionist leader informed me.
"You mean that every one of those who were presumably deported was actually killed?"
"Every single one," the Bund leader asserted.
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