Henryk Lederman died in 1944.
Minna Lederman died in 1995.
William Lederman died on 1992-07-26.
D. Ross Lederman died on 1972-08-24.
Henryk Pogorieły died in 1943.
Henryk Hryniewski died in 1937.
Henryk Breit died in 1941.
Henryk Stażewski died in 1988.
Henryk Flinik died in 2008.
Henryk Sawistowski died in 1984.
Henryk Gotlib died in 1966.
Henryk Pillati died in 1894.
Henryk Woliński died in 1986.