Yes, 'twas I. Prof. Flores linked here could probably tell us more about Bowers, but his academic interest seems to be more where English language American and Spanish-influenced and Spanish language cultures exist in proximity to each other.

While no knowledge is of itself trivial, were I to meet Bob Shane again alive and well as 15 or 20 years ago - I would NOT ask him what brand of flat picks he used. There were more important things to talk about.