The records consist primarily of several decades of research data from the study of water quality in lakes. Prepas, who is Professor Emeritus of Natural Resource Management at Lakehead University, was also formerly employed at the University of Alberta. Much of the research was conducted on Alberta lakes, with some performed in Northwestern Ontario as well. A significant portion of the third accession consists of slides and print photographs showing research activities.

The records also include some teaching notes and course materials, as well as some correspondence and administrative material.

Web material related to the 2018 municipal elections in municipalities across Northwestern Ontario.

Sites crawled include those of municipalities, candidates, news sources, and third party groups making endorsements or recommendations.

Web material related to the 2022 municipal elections in municipalities across Northwestern Ontario.

Sites crawled include those of municipalities and candidates. Candidate social media accounts include Facebook, Instagram, Twitter, and TikTok. All sites are publicly listed as related to the election.