Berry Gordy/Smokey Interviews

Hi everyone,
I'm the archive researcher on the upcoming feature-length Motown documentary.
I'm looking for radio and television interviews of both Berry Gordy and Smokey Robinson from the 1960s and early 1970s [[not necessarily together!)
There are several which are quite well known, but it would be great to know if any collectors out there have any slightly rarer ones, or if any Detroit locals know of any interviews conducted by local TV/radio crews.
Please do send me your ideas!
I am on hannahgreen@fulwell73.com