“If they were placed by a relative of Obama’s, say by his grandparents, then they are meaningless.”
No they are additional contemporaneous evidence that Obama was born in Hawaii in early August 1961, not in a hospital in Kenya!
I’m sure his Grandma Toot will be happy to admit he was born in Hawaii, I bet she even has baby pictures from the hospital of her grand son.
What about the fact that the address listed as their residence in the birth announcement,belonged to another family, who lived in it from the 50's until 2008 ? That's a weird inconsistency. You'd have to see the actual newspaper (not the microfiche) to be sure.