Leslieville in Toronto, Ontario — Central Canada (North America)

Jefferson Glass Co. Factory

Later ACME Paper Box Co

Photographed by Caroline Record, November 20, 2025

1. Jefferson Glass Co. Factory Marker

Inscription. A major producer of blown and pressed glass in Ontario opened here in the early 1910s. The Jefferson Glass Co. specialized in light shades and illuminated signs and by 1918 it was also making about 35,000 light bulbs a day.

The Acme Paper Box Co, founded by Moishe (Moses) Oelbaum, bought the Jefferson factory in 1931. Born in Galicia in Eastern Europe, Oelbaum was a philanthropist who donated to many causes and helped establish several Jewish schools in Toronto. Acme remained a family business until 1964 when it was sold to a conglomerate, and the plant became a paper mill.

After the mill moved away in the 1980s, the factory fell into disuse. Like many of the area's multi-floor industrial buildings, it could not accommodate the latest production lines, and new laws regulated pollution from heavy industry.

The building was later refurbished and now houses many light industries and small businesses.

Erected 2018 by Heritage Toronto.

Topics and series. This historical marker is listed in this topic list: Industry & Commerce. In addition, it is included in the Canada, Toronto Heritage series list. A significant historical year for this entry is 1910.

Location. 43° 39.959′ N, 79° 20.533′ W. Marker is in Toronto, Ontario.

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It is in Leslieville. It is at the intersection of Carlaw Avenue and Badgerow Avenue, on the right when traveling south on Carlaw Avenue. Touch for map. Marker is at or near this postal address: 365 Carlaw Avenue, Toronto ON M4M M4M, Canada. Touch for directions.

Regionally, this marker is in Greater Toronto

and on the Golden Horseshoe.

It is also in Central Canada.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once a British colony,

the Viceroyalty of New France,

the Haudenosaunee (Iroquois) Confederacy,

and Rupert’s Land.

Other nearby markers. At least 8 other markers are within 3 kilometers of this marker, measured as the crow flies: George Leslie (approx. 0.8 kilometers away); Toronto's first professional stadium: Sunlight Park 1886 - 1896 (approx. 1.2 kilometers away); The Ashbridge Estate / Le Domaine des Ashbridge (approx. 1.6 kilometers away); Dominion Square (approx. 1.7 kilometers away); 461 King Street East (approx. 2 kilometers away); St. Paul’s Basilica (approx. 2 kilometers away); House of Providence (approx. 2 kilometers away); Tank House 10 (approx. 2.1 kilometers away). Touch for a list and map of all markers in Toronto.

Photographed by Caroline Record, November 20, 2025

2. Jefferson Glass Co. Factory Marker

Credits. This page was last revised on November 22, 2025. It was originally submitted on November 20, 2025, by Caroline Record of Montréal, Québec. This page has been viewed 78 times since then and 32 times this year. Photos: 1, 2. submitted on November 20, 2025, by Caroline Record of Montréal, Québec. • Andrew Ruppenstein was the editor who published this page.