that’s not Ann Dunham!
... that photograph is one of a series sent to a Brisbane (Australia) academic by (he says) an anonymous genealogist friend of his from the US, who maintained the model looked like Stanley Ann Dunham. It's not Stanley Ann Dunham. The photographs of the model appeared in exotic magazines in 1958, when Stanley Ann was still attending high school on the mainland and had never laid eyes on Frank Marshall Davis, a man who was older than her own father.