What do you think was in the redacted box? even if you spell out stanley ann dunhan obama there is still about 12 more characters missing.
The redacted part most likely was a reference to the trouble in March 1964 regarding the possible impregnation by Obama Sr. of a Kenyan high school exchange student studying in Massachusetts. Probably redacted to protect the girl's identity.
The high school student had left the U.S. and the thinking was that she went to England to get an abortion.