After some (not so extensive) research, I successfully tracked down two of the original sampled songs Mr. West has tapped into for this latest 5 star reviewed album "My Beautiful Dark Twisted Fantasy" The songs "Devil In A New Dress" and "Lost In The World" are in my top five cuts and I wanted to share with you the sources that he (and his production entourage) got'em from. Enjoy!
Bon Iver "Woods"(sample)
-"Lost In The World" (song)
Smokey Robinson & the Miracles
"Will You Still Love Me Tomorrow" (sample)
"Devil In A New Dress" (song)