Szlama Ber Winer

Polish Jew from Izbica Kujawska

Szlama Ber Winer, nom de guerre Yakov (Ya'akov) Grojanowski (23 September 1911 – c. 10 April 1942), was a Polish Jew from Izbica Kujawska, who escaped from the Chelmno extermination camp during the Holocaust in German-occupied Poland.

Szlamek (the diminutive form of Szlama) is sometimes incorrectly referred to as Szlamek Bajler in literature by the surname of his nephew, Abram Bajler, from Zamosc (see postcard).

Szlama Ber Winer escaped from the Waldlager work commando at Chelmno (German: Kulmhof), and described in writing the atrocities he witnessed at that extermination camp, not long before his own subsequent murder at the age of 30, in the gas chambers of Belzec.

His deposition is commonly known as the Grojanowski Report.