Records relating to Steve Mantis's work in injured workers' rights and advocacy, including with: Thunder Bay District Injured Workers Support Group; Ontario Network of Injured Workers Groups; and the Worker's Compensation Board (WSIB). Records of research projects. New Directions Speakers' School. Poverty reduction initiatives. Bay Credit Union Social Responsibility Committee. Run for MPP in 2011 Ontario election as NDP candidate for Thunder Bay-Superior North.

While records are divided into series by organization/association, it will be clear to readers that the work of many of these organizations overlaps and interconnects. Mantis's role was often as a connector, building synergy and solidarity between organizations.

A media kit, produced by Grand Council Treaty Number 9. Titled "Reed's Greed," the materials here relate to opposition to Reed Paper (Canada) Ltd., the company responsible for mercury pollution in the English & Wabigoon River system, affecting the people of Grassy Narrows First Nation/Asubpeeschoseewagong Netum Anishinabek.

Most material dates from 1976. At this time, Reed was planning an expansion of its forest products operations and requesting increased timber rights from the Ontario government. This is also a time after the mercury pollution had been identified by researchers and made known to governments, but long before any settlements were reached.

Documents include media releases, clippings, information sheets, and posters for protest events in Winnipeg.

Most materials are in English; some in an Indigenous language written in syllabics.