....seems to indicate a numbering system that might also seperate the father's occupation into various, numbered also from perhaps zero to, say nine or ten?
Number three for example, might be 'academic' - and that might include both a student as the kenyan was, and a teacher, for want of a better example.
It looks as if the kenyan was shown as a number 9 because the entry was AFRICAN and that is NOT a race. Btw, I base my comments on the belief that the kenyan student and ANN S OBAMA, who showed up in the Seattle Polk as ANNA OBAMA were the parents of the child Mary babysat in January, 1961.
The name Barack Hussein Obama 11 is on that index imo because he was born in Hawaii. He's just NOT the man in the WH. He shows up with Ruth and his father in Kenya in a family photograph taken in 1966, about a year after Mark was born.