Some interesting websites:
Fulton Bag and Mills Digital Collection at Georgia Tech
Like a Family - The Making of a Southern Cotton Mill World
Armstrong Atlantic Journal of History
Old Hat Records provides some information about 'Cotton Mill Colic'
A few books about early country music and the influence of mill workers:
Patrick Huber - Linthead Stomp
Gavin James Campbell - Music and the Making of a New South
Patrick Huber - Linthead Stomp
Gavin James Campbell - Music and the Making of a New South