Jules Ephraim Mastbaum - Passed away on December 7, 1926 at the age of 54, from Peritonotis. 

Jules E. Mastbaum died on December 7, 1926, at age 54. Like his brother Stanley, he was cradled by his mother, Fanny, as he passed away. Jules' widow, Etta, sold The Stanley Company to the Warner Brothers in 1928 for $200 million (equal today to $3 billion). 

Not long after Jules' death, it was announced that a school would be named in his honor. The ground was broken in August 1927 at Frankford and Clementine in Kensington. On February 1, 1929, Jules E. Mastbaum Vocational-Technical School opened its doors. Two years later, Etta donated to the school a cast of Rodin's "The Thinker," in her husband's memory.