Yes, I am aware of the photo and its date written on it.
What is confusing is that, as the article points out, there is no record of Obama returning to Hawaii between 1967 and 1971. Nothing in the books he (or Ayers) has written, nothing in the released records to indicate any travel by Obama back to the US in 1969. He was supposed to be in Indonesia that entire time.
So I know this photo and story are out there and looks very true. It just does not fit any known/verified timeline of events.