“The real purpose of this trip, however, may have been different than Stanley Ann Dunham described to her friends. In August, 1961, she enrolled in a University of Washington extension course. Between August, 1961 and March 1962, she enrolled in a total of four extension courses at the University of Washington, earning a total of 20 credits for her work in those courses, no small feat, considering that graduation required 180 credits, and the typical full time student earned 45 credits a year. Neither Box nor Blake has any recollection of Stanley Ann telling them she was enrolling on that same trip in extension courses at the University of Washington. (40)”
http://www.christianfaithandreason.com/obama7.html
I may wrong in assuming that extension courses are correspondence courses.
I have been in contact with the author of that particular book, Michael Patrick Leahy, and he has agreed that there is an absence of evidence that Obama Sr and Ann ever lived together. He is changing some errors which he had written and the searching continues including further research on the registered owners of the property used in the birth announcement. He also agrees with me that Ann stayed in WA state after she registered for the extension courses which is why she registered as Ann Dunham, so she was eligible for in state tuition. Remember she had graduated from Mercer Island High School, and lived continuously in WA state since 1955 until the family moved to HI in June 1960.
She married him on February 2, 1961 in Maui, Hawaii despite some parental opposition to the marriage from both sides. Obama Sr.'s other wife, Kezia, granted her consent for him to marry a second wife, in keeping with tribal custom, though Ann Dunham would not find out that her new husband was already married until later. Dunham was three months pregnant at the time of her marriage. On August 4, 1961, at age 18, she gave birth to her first child, Barack Obama II. Later that month, she visited old friends in Washington state with her new baby.
Mother and son returned to Seattle, where she enrolled in the University of Washington either before or after her husband left Hawaii. Subsequently, Dunham moved back to Hawaii and filed for divorce in Honolulu in January 1964. Obama Sr. did not contest, and the divorce was granted.