Chaim Gross historian Lewis Jacobs made a 30-minute feature of Gross carving, called "Tree Trunk to Head", showing Gross at work in his East Village studio on a portrait of his wife Renee, who models in the film. In 1949 Gross sketched Chaim Weizmann, President of Israel, at several functions in New York City where Weizmann was speaking. Gross began a portrait in clay and then traveled to Israel in the summer of that year hoping to be able to meet Weizmann and have him sit for a portrait. Weizmann was too ill, but Gross completed the bust in bronze later that
Chaim Weizmann been successful. Of Chaim Weizmann's fifteen siblings, eleven survived to adulthood. Ten of the eleven surviving siblings made aliyah. Two also became chemists; Anna (Anushka) Weizmann worked in his Daniel Sieff Research Institute lab, registering several patents in her name. His brother, Moshe Weizmann, was the head of the Chemistry Faculty at the Hebrew University of Jerusalem. Two siblings remained in the Soviet Union following the Russian Revolution, a brother, Shmuel, and sister, Maria (Masha). Shmuel Weizmann was a dedicated Communist and member of the anti-Zionist Bund movement. During the Stalinist "Great Purge", he was arrested for alleged espionage and