He developed Electrical Porcelain with transmission engineers at GE. His family continued to work at Building 68 in Schenectady for decades. William's son Frank Cermak advanced insulator design into the mid 20th century.
When Rex Harrison accepted his Academy Award for My Fair Lady (1964), he dedicated it to his two fair ladies, Audrey Hepburn and Julie Andrews both who had played Eliza Doolittle with him.
By the time I did 'My Fair Lady,' I didn't have to say anything. Hollywood also kept it a secret that '40s movie goddess Rita Hayworth didn't do her own singing. She may have been Fred Astaire's favorite dance partner, her singing voice was less than satisfactory.