WHICH IS WHICH? -- Mrs. James Braddock, above, 39-year-old Washburn mother of 15 children and grandmother of 4, knows which of the twin infant sons in her arms is David Brent Draddock and which is Donald Bryce Braddock, but it's a little hard for the casual observer to tell at this point. One weighed 10 pounds and the other 9 pounds at birth in January [1953]. The boys have nine brothers and four sisters. The father of the twins is very proud of the new addition to his flock and of the five generations of living representatives in the family.