Law Bulletin headlines this week in history.5 years ago‘26th and Cal’ gets new name — March 1, 2012When George N. Leighton started practicing law in 1946, he represented clients at the Cook County Criminal Courts Building at 26th Street and California Avenue.“All my clients were defendants in criminal cases who had no money,” Leighton, 99, said by phone from his home in Plymouth, Mass. “And nine times out of 10, it was difficult to find out if they had a defense.“They came to me …