This collection consists of technical plans and details of the Deloro mining processes, labour relations and union papers, medical information concerning arsenic poisoning, historical material regarding Deloro and the village of Marmora, maps, and plant photographs, layouts, and site plans.

This addition to the fonds consists of interviews with prominent NDP and labour activists recalling the 1960 by-election in Peterborough, and the early history of the Co-operative Commonwealth Federation (CCF) and the New Democratic Party (NDP) in the riding. As well there are related transcripts; newspaper articles and correspondence.