“The Ground Breaking: An American City and Its Search for Justice,” by Scott Ellsworth (Dutton)No one really knows what 19-year-old Dick Rowland did or said to Sarah Page in Tulsa, Oklahoma, when he rode the elevator she operated to the fourth floor of the Drexel Building, the nearest place to Rowland’s shoeshine stand where a Black person could use the washroom. But the 17-year-old Page screamed, Rowland ran and police were called.