This week's L.A. Weekly has an interview with Carol Kaye, the most recorded bassist in pop history.
 
http://www.laweekly.com/ink/04/20/features-duersten2.php

I didn't know the West Coast musos were working on Motown material from 1962. I thought that only started in the 70s as Motown was transitioning to the West Coast.

very impressive interview,she's a true legend!