There appears to be a number of copies available on Ebay:
http://shop.ebay.com/?_from=R40&_trksid=m38.l1313&_nkw=obama+from+promise+to+power&_sacat=See-All-Categories
Thank-you, it will still require a very serious discussion before I can obtain a copy. The local library has been tried over a month ago with negative results.