René-Lévesque at the southern end; Pine Avenue at the foot of Mount Royal at the northern end; University Street at the eastern end, and Guy Street, along with Côte-des-Neiges Road, at the western end. In effect, however, the 'Square Mile' was contained within a far smaller area, between Sherbrooke Street and Pine Avenue, and Côte-des-Neiges and University, covering scarcely nine streets on the north–south axis. From east to west: McTavish Street, Peel Street, Stanley Street, Drummond Street, Mountain Street, Ontario Avenue (now Avenue du Musée), Redpath Street, Simpson Street, and Guy Street; and three streets on the east–west axis, from south to north: Sherbrooke St. West, McGregor Street (now Doctor Penfield Avenue) and Pine Avenue. Architecture The architects of the Square Mile included Robert Findlay, Bruce Price, Sir Andrew Taylor, William Thomas, John Hopkins and the brothers Edward and William Maxwell. The architecture was an eclectic mix of the Neo-classical, Neo-Gothic, Romanesque, Second Empire, Queen Anne and Art Nouveau, though other styles also figured prominently, sometimes within the same home. By World War I, simpler houses were built, such as Herbert Molson's. Maison Cormier was one of only a few examples of Art deco. Scottish sandstone and local granite were commonly used materials, and most homes had substantial grounds, atria and large conservatories. A great many of the Square Milers were keen horticulturalists and aside from their gardens, they enjoyed keeping hothouse flowers through the long winters. The streets of the Square Mile were lined with elm, spruce and maple trees, but an outbreak of Dutch elm disease in the 1970s destroyed those that had once lined Sherbrooke Street. Montreal's mercantile community (1642-1930) In 1642, a fort named Ville Marie was founded on the Island of Montreal by Paul de Chomedey de Maisonneuve. Ville Marie became a centre for the fur trade and French expansion into New France until 1760, when it was surrendered to the British army, following the French defeat of the Battle of the Plains of Abraham. British immigration expanded the city. The British immigrants who came to Montreal after the Conquest tended to be from well-connected mercantile families and immigrated to Canada as a means to further their fortunes, unlike earlier British immigrants who came to North America to escape religious or political persecution. The city's golden era of fur trading began with the advent of the locally owned North West Company. In the 1760s, the