Diagram explaining the principle of industrial unionism in terms of opposing battle fronts of the working and master classes and their organisation within a large factory of the period.
Industrial Workers of Great Britain
1917
<i>Industrial Unionism</i>, published by the Industrial Workers of Great Britain.  Reproduced by the <a rel="nofollow" class="external text" href="http://gdl.cdlr.strath.ac.uk/redclyde/redcly048.htm">Glasgow Digital Library</a>.