The Grojanowski Report is an eye-witness account about atrocities in the Nazi Chełmno extermination camp, written in 1942 by Polish-Jewish escapee from the camp, Szlama Ber Winer (also known incorrectly as Szlawek Bajler), under the pseudonym of Yakov (or Jacob) Grojanowski.
A report compiled by a former inmate of the Nazi Chełmno extermination camp, detailing horrific events, was written in 1942 by Szlama Ber Winer under an assumed identity, Yakov (or Jacob) Grojanowski.