Columbia subject headings:
Southern Bell Telephone and Telegraph Company--History.
Telephone companies--Southern States--History.
Telephone--Southern States--History.
Harvard subject headings:
Southern Bell Telephone and Telegraph Company--History.
Telephone companies--Southern States--History.
Telephone--Southern States--History.
Princeton subject headings:
Southern Bell Telephone and Telegraph Company--History.
Telephone companies--Southern States--History.
Telephone--Southern States--History.