"Montreal from 1535 to 1914. Vol. 3. Biographical" by William H. Atherton is a historical account written in the early 20th century. This volume focuses on the biographical sketches of notable figures who shaped the history and development of Montreal during a significant period, reflecting the social, economic, and cultural fabric of the city. The beginning of this work introduces several esteemed individuals, each contributing to the growth of Montreal in various sectors, including finance, health, and industry. Richard Bladworth Angus stands out for his extensive role in banking and railroads, marking his influence in shaping Canada's financial landscape. Other figures, such as Leonidas Villeneuve, highlight the transformative impact of local entrepreneurs, while Henry R. Gray showcases the importance of public health initiatives. The opening portion sets the stage for a detailed exploration of these lives, illustrating their commitment to public service and the enduring legacy they have left on Montreal. (This is an automatically generated summary.)