Ontario Heritage Trust - Online Plaque Guide

Like our traditional printed guide, it's easy to find plaques in your own community. What makes this online version so unique is its powerful search mechanism. Not only can you now find plaques based on location, but also by theme. You are just a few clicks away from having information at your fingertips about the hundreds of familiar blue and gold plaques located throughout Ontario.

31. Maud Leonora Menten 1879-1960

A graduate in medicine from the University of Toronto, Dr. Menten gained international recognition in 1913 for the discovery, with Dr. Leonor Michaelis, of an equation now considered basic to all work in enzyme kinetics.

32. McFarland House 1800, The

Built by James McFarland, this Georgian-style house was used as a hospital during the War of 1812 by both British and American forces. After 1814, the war-torn house was repaired, and remained in the possession of the McFarland family for several generations.

33. Mill of Kintail and Robert Tait McKenzie, The

Surgeon, physical educator, and noted sculptor, McKenzie was responsible for the design of many war memorials in Canada, the United States and Great Britain. In 1930, he renovated the old Baird mill for use as a studio, renaming it after his ancestral home. The Mill of Kintail is now a museum.

34. Newcastle Fish Hatchery 1868, The

Successful experiments by Samuel Wilmot in the artificial breeding of Atlantic salmon led to the establishment of one of the earliest full-scale fish hatcheries in North America on the banks of Wilmot Creek.

35. Nuclear Power Demonstration Reactor

In 1962, the NPD Reactor supplied the Ontario power grid with the first nuclear-generated electricity in Canada. The reactor was the proving ground for research and development that led to commercial application of the CANDU system.

36. Ontario Vaccine Farm, The

This vaccine farm was established in 1885 by a local physician, Dr. Alexander Stewart, and was the first institution in Ontario to produce smallpox vaccine. In 1916, the operation was transferred to the University of Toronto.

37. Ontario Veterinary College, The

Founded in Toronto in 1862 as the Upper Canada Veterinary School, this was the first institution in Canada to offer courses in veterinary medicine. Since 1922, the college has been located in Guelph.

38. Ontario Yellowbirds, The

In 1924, the Government of Ontario set up a provincial air service to replace forest fire detection by canoe and foot patrols. Known as the "Yellowbirds" because of their yellow and black colours, the service pioneered aerial firefighting techniques and provided air services to a wide variety of provincial government activities in northern Ontario.

39. Oronhyatekha 1841-1907

A Mohawk of great renown and versatility, Oronhyatekha, who also called himself Peter Martin, combined a medical practice with activities as an orator, a marksman, and an organizer of humanist concerns, among them the Independent Order of Foresters.

40. P.L. Robertson Manufacturing Company, The

The first firm in the world to produce socket-head screws, the P.L. Robertson Company was established in 1907. Socket-head screws found a ready market among boat builders, electricians, furniture companies, and manufacturers of the Model T Ford.

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Online Plaque Guide

Welcome to the Ontario Heritage Trust's Online Plaque Guide.