An eclectic crew, to say the least:

Merle Travis
Chet Atkins
Joe Maphis
The Weavers
Bud & Travis
The Journeymen
The Kingston Trio
Jon Adams
Terry Gilkyson
Mose Allison
Charlie Byrd
Oscar Brand
Joe & Eddie
Josh White
Bob Gibson
Laurindo Almeida
Odetta
Jack Teagarden

With additional influences by:

The Limeliters
The Clancy Brothers and Tommy Makem
Gordon Lightfoot
Red Shea
Harry Chapin
John Stewart

Many more.