That's a reference to Susan Blake. That visit occurred on the trip back from Kenya sometime in the August 5-7 time frame.
Upon reflection on the divorce decree attached to the port of entry documents, the decree is long after Obama arrived in the US the first time.
The divorce was filed in January 1964, around two and a half years after he was born. You would speculate that this is a certified copy of the proceeding filed with the Kenya birth certificate by Stanley Ann when she brought Obama back from Indonesia and she had to file this to prove that Obama was not Suetoro's son. Thus you would expect that she was returning from Indonesia to a US Port of Entry on the West Coast.
I think it is reasonable to hang on to the location information until copies of the documents are obtained because the Obama people are busily out there scrubbing all of the documents they can get removed from wherever they are filed.
Another element of the importance of the divorce decree is that you have Stanley Ann under oath on the proposition that she and Obama Senior were in fact married--I doubt that anyone is likely to get by this in an argument that they were not in "wedlock" for purposes of the immigration statutes.
I have never been as concerned as I should have been about the Obamites out there scrubbing the record--having been in complex litigation many times over the years, my experience is that copies of relevant documents crawl out of the woodwork on a regular basis from places where the scrubber forgot to look--like this copy of the divorce file and birth certificate (if and when it appears).
The other thing that is troublesome about the divorce papers is that it places the marriage in Hawaii. I have assumed that the marriage took place in Kenya.
If the Hawaii story is correct, that may be an indication that the marriage certificate files were at some point removed--and presumably, the divorce file if it could be obtained from the court of record would also disclose many other relevant papers; it would be surprising if it too had been removed from the legal records.