• Born: 27 Dec 1913, Slup near Parysow, Poland
  (birth certificate)
• Married to Janina Praska on 01 Sep 1939 Ithaca, NY, U.S.A.
  (marriage certificate)
• Died: 01 Jul 2008, Konstancin-Jeziorna near Warsaw, Poland
  (death certificate)
• Occupation: scientist, Professor of Horticulture
• Collection of photographs: "From the cradle..."

1938

According to family stories, he was born on December 25 or on December 26. Nevertheless, the birth certificate states December 27.