Analysis of information sources in references of the Wikipedia article "Vrba–Wetzler report" in English language version.
Also see Kathryn Berman and Asaf Tal, "The Uneasy Closeness to Ourselves", interview with Götz Aly, German historian, Yad Vashem.
James MacDonald (25 November 1942). "Himmler Program Kills Polish Jews", The New York Times, 10. (full text)
James MacDonald (25 November 1942). "Himmler Program Kills Polish Jews", The New York Times, 10. (full text)
E. C. Daniel, "Pole Says Nazis Plan Slave Town: Reports 75,000-Acre Plot in Poland Even Contains Permanent Factories", The New York Times, 4 June 1944, 6.
"Czechs Report Massacre; Claim the Nazis Killed 7,000 in Prison Gas Chambers", The New York Times, 20 June 1944, 5.
Also see Kathryn Berman and Asaf Tal, "The Uneasy Closeness to Ourselves", interview with Götz Aly, German historian, Yad Vashem.