Having long been used as an invaluable tool for researchers, planners, architects, insurance adjusters, and even environmental consultants, fire insurance plans can tell us a lot about the history of our cities and towns. Not only do they show us what materials a building was constructed from, but also other information such as what the street names and addresses were, property setbacks, location of openings such as doors and windows, and the purpose of the building at that time. There was one company that dominated the fire insurance plan industry in Canada between 1875 and 1917. That was the firm of Charles E. Goad, Civil Engineers of Montréal. By 1910, his firm had produced detailed fire insurance plans for over 1300 cities and towns in Canada, plus hundreds more around the world. In this week’s article, I’ll show you how to read a fire insurance plan and how you might find one useful if you live or work in an older building.