Oh, wait... I have it. I found a description of what Flint calls fingerstyle crosspicking on the Mel Bay site.

Fingerstyle crosspicking is an enchanting style of playing the guitar that produces a beautiful, flowing, harp-like effect similar to the 5-string banjo chromatic or melodic style. The idea is to play as many open strings as possible while playing all fingered notes as high on the fingerboard as possible. Unless played in a legato fashion, successive eighth notes are not played on the same string. This technique allows the tones of a melody to overlap and ring longer than if played in the normal fashion.

I found some info on Flint on Thom Bresh's site. It turns out Flint is second cousin to Merle Travis.

      - Mark