I hate to raise this at this late date but if you have two pictures of Obama Sr. at the Honolulu ticketing and baggage check in (leaving); both before the airport is torn down in 65; one when they were married; the second at some later date (with the boy); their time line doesn't provide for that; in our time line, it probably doesn't make a difference.
I don't know that makes the boy Obama either. The boy doesn't look like any of the Obama pictures. There is a boy on a couch with her Indonesian second husband who looks a lot like the boy in the airport picture--maybe distinguishable. Otherwise, you don't find any Obama picture that looks like the boy in the airport.