The Samuel Proctor Oral History has a transcription of  an interview made on April 25, 2015,

https://ufdcimages.uflib.ufl.edu/AA/00/06/61/96/00001/AAHP%20376%20Bernard%20Williams%204-25-2015ufdc.pdf

The audio of the interview is at

https://ufdc.ufl.edu/AA00066196/00001/audios

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