Fonds reflects L.-G. Papineau's daily work as an engineer between the years 1901 and 1905. Each volume is a daily diary, covering a year. Daily entries describe the activities of the people in his office. Most entries are technical: daily follow-ups on public works projects, including in the Montreal and Sorel harbours, Hochelaga, and on the Saint-Pierre River, meetings, finished tasks, and the absence of workers. Some are family related or comments on the news (for example, Queen Victoria's funeral on February 4th. 1901). Weather conditions and water levels are reported regularly, as it influences the pace of work on the construction sites.