When she registered for classes at UW in August 1961 she registered for extension courses, she did not actually attend classes until early 1962 if we can believe what the babysitter says. An article about the babysitter appeared in an Alaskan paper and was reproduced on a blog from the area found here:
http://redoubtreporter.blogspot.com/2009/01/obama-baby-sitter-awaits-new-era.html
Also Anna Obama student was listed in the Polk’s Seattle City Directory for 1961 and that article can be found here:
http://www.capitolhilltimes.com/main.asp?SectionID=26&SubSectionID=248&ArticleID=27447
Various former high school classmates besides Susan Blake visited Ann and Jr while she was living in WA state with one mentioning visiting Ann after the 1962 World’s Fair which was held in Seattle from April 21, 1962 until it closed in October 21, 1962. Some of them were mentioned in an excerpt of a book which Michael Patrick Leahy has been writing about Jr. I don’t know if the Christian Faith and Reason website is back up yet or not but testimony from Ann’s friends was given in the above mentioned excerpt posted there.