I love old-time American music- but it's so very far removed from some of the stuff that emanates from Nashville. One of my "bibles" for country music - apart from the recordings of those people I've mentioned (Carter Family, Jimmie Rodgers, Delmore Brothers, Doc Watson, Doc Boggs, the Harry Smith Collection, etc.) is the Fiddlers' Fakebook - a wonderful collection of fiddle tunes from a variety of sources.