Columbia subject headings:
American Federation of Labor--History--Bibliography.
Gompers, Samuel, 1850-1924--Bibliography.
Labor unions--United States--History--Bibliography.
Harvard subject headings:
American Federation of Labor--History--Bibliography.
Gompers, Samuel, 1850-1924--Bibliography.
Labor unions--United States--History--Bibliography.
Princeton subject headings:
American Federation of Labor--History--Bibliography.
Gompers, Samuel, 1850-1924--Bibliography.
Labor unions--United States--History--Bibliography.