As something of an insult, Edward Travers made a habit of calling Silverstein by his middle name 'Julius'.
Silverstein spent forty years in the art world, as a dealer, collector and connoisseur. He created a private museum in his South Kensignton house, which he called is 'Hall of Curiosities'. (PROSE: Fear of the Web) Taking up pride of place was a deactivated robot Yeti from Tibet, that he purchased off Professor Edward Travers in 1939. (TV: The Web of Fear)
He married outside the Jewish faith; and with his wife, Edith, he had a son Malachi. Over the years, through frequent visits, Malachi and Anne Travers became friends. (PROSE: The Lost Skin, Fear of the Web)
After reactivating a Yeti control sphere, which later vanished, Travers went to Silverstein on 4th February 1969 and requested that he return the Yeti, warning him of the danger. However, Silverstein refused to listen and sent for Travers' daughter Anne to take her father away.
After Travers left with Anne, Silverstein started to blow out the candles in the museum, but heard a window break in the room where the Yet was displayed. Silverstein thought it was Travers, but unknown to him, it was the reactivated control sphere. He went to investigate, but was attacked and killed by the reactivated Yeti. (TV: The Web of Fear)