Gemsbok, there are few things that would be less remarkable than a mixed race child in a Hawaiian hospital in that era !
As to some who may have had personnel recollections, I was able to find a partial list on Google in nabout 10 minutes:
http://obamasneighborhood.com/friends.html
http://www.guardian.co.uk/world/2008/oct/26/barackobama-uselections2008
http://journalobama.com/obama-childhood/
http://www.hotklix.com/?ref=link/12485
Which link contains any indication or confirmation that he was born in Hawaii and spent his early years there?
None.
Which link contains any indication or confirmation that he was born in Hawaii and spent his early years there?
None.