Here's a great interview with Steve Maxwell, one of the earliest American black belts who studied under Rorian back in the early 1990s in Torrance. Interestingly, he began training jiu jitsu at 38, just like yours truly.
FightWorks Podcast with Steve Maxwell
Maxwell is also based out of San Diego (University of Jiu Jitsu) and is known for his strength and conditioning work.
