Here are a few links to related organisations and projects.

About Viktor Ullmann, his life and works

Paul Sacher Foundation Basel – Custodian of Ullmann’s manuscripts

Goetheanum Dornach Switzerland – first performance in the new auditorium was a Viktor Ullmann opera

About art in Terezin

Defiant Requiem – the stirring true story of how the Terezin prisoners mocked their Nazi captors through performances of Verdi’s Requiem

University Over the Abyss – the lectures in Ghetto Terezin

Friedl Dicker Brandeis Life in Art and Teaching

Památník Terezín

Coco Schumann and the Ghetto Swingers

The story of Kurt Gerron – the film director forced to make a propaganda film about life in Terezin

Gideon Klein, an extraordinarily gifted composer and pianist
Gideon Kline Foundation

Gaby Flatow and the Hans Krasa foundation

Art and the Holocaust generally

Vor 80 Jahren: Ausstellung “Entartete Kunst” | bpb (in German)

The Concentration and Death Camps – Music and the Holocaust

The Holocaust: Lest We Forget – Orchestras in concentration camps

Music of the Holocaust — United States Holocaust Memorial Museum

מוזיק אין חורבן | Music in the Holocaust | A blog for MUS3179, taught at …

Bridge-building, refugee support, anti-racism

Elysium Between Two Continents

Beth Shalom Nottingham / National Holocaust Centre

United States Holocaust Memorial Museum

About the Holocaust

Auschwitz-Birkenau Memorial and Museum

Ghetto Fighters’ House Museum

e-Oswiecim Bookstore – Books about the Holocaust 

Shoah Foundation 

Simon Wiesenthal Center

Oldest Holocaust survivor, Alice Herz-Sommer, dies at 110
from Haaretz Jewish News (paywall)

about the Kindertransport

6 Stories Of The Kindertransport | Imperial War Museums

Kindertransport & Refugees | Holocaust Memorial Day Trust

Kindertransport – The National Archives (classroom resources)

about life and culture

Elisabeth Kübler-Ross Foundation

West London Synagogue

27th Jewish Culture Festival in Krakow

The Inter Faith Network (IFN)

German Films: Company Info: CV Filmproduktions GmbH
responsible for producing the highly acclaimed film Karrusell about the life of Kurt Gerron in Theresienstadt

general historical reference sites

German Historical Institute London

Kriegsarchiv : Austrian State Archives – Österreichisches Staatsarchiv

Paul Sacher Foundation Basel – 20th Century Music