Thank you Jerry & Mike for making my point; most folks largely make the comparison of Belafonte and Bibb because both are black. Will Holt was caucasian.
Jeez, I loved to hear and see Belafonte, and did regularly at the Greek Theater in those long gone days. Saw Bibb once in person at one of the LA clubs and he was very exciting. Only saw Will Holt on TV a time or two, but have a couple of his records. Art captured his essence well, and his repetoire could have largely been the same as Belafonte's, at least in spirit.