On 30 August 1942, during the occupation of Poland by Nazi Germany, Cornides was in Rzeszów, on his way to the city ofChełm by train. He wrote a private journal to pass the time, recording things he would not want totalk about with anyone else. He wrote what a German railway policeman told him, that the area would soon be free of Jews, since every dayfreight trains packed with Jews from the Generalgouvernement passed through the railway yard, and come back in the evening empty and swept clean. The policeman said he had seen 6,000 Jews from Jarosław recently killed in one day. Cornides made also several entries about what he had seen himself. His observations surfaced in 1959, typewritten on three letter size sheets. They were published in July 1959 by historian Hans Rothfels in the German quarterly Journal of Contemporary History. By that time, the much more revealing Gerstein Report which featured shocking details about the extermination process at Belzec was already well known in Germany.
Diary entries
Cornides took a regular German passenger train from Rzeszów to Chełm and spoke with the other passengers. He arrived at Rawa Ruska junction around noon on 31 August 1942 and made further entries in his journal later that day. Cornides lounged at the Deutsches Haus in Rawa Ruska before he boarded the connecting train to Chełm the same evening. In the next hour, he made three separate entries in his diary. The first, written at 5.30 pm, stated that what he had learned was extraordinary.
Belzec camp
In his train compartment, Cornides talked to a German woman who had witnessed the round-up of Jews at Chełm and the shooting of those who tried to escape. The railway policeman said: "In the railway documents these trains run under the name of resettlement transports," and added that after the murder of Reinhard Heydrich by Czech resistance members, several trains filled with Czech Jews had passed through. Camp Belzec was located on the railway line. The woman promised to point it out to Cornides when they passed it. The entry in his diary reads: In his typewritten pages, Cornides also summarized conversations with other Germans he met during his stopover in the Deutsches Haus at Rawa Ruska, as well as statements he remembered from Chełm upon his arrival there.