About Us

The Great Library serves the legal information needs of Law Society licensees and other legal researchers by facilitating access to an extensive collection of print and electronic resources, and by providing legal research assistance and instruction.

As a licensee-funded facility, the Great Library's primary users are lawyer and paralegal licensees of the Law Society of Ontario. The library also serves articling and LPP students, summer students, law clerks, law librarians, and others who are working for licensees. The library is open to the public.

We encourage you to use our website, services and resources to make finding legal information, improving your search skills and getting research help easier.


Contact Us

For research help and general inquires:

  • E-mail: refstaff@lso.ca
  • Tel: 416-947-3300, ext. 2510, or 1-800-668-7380, ext. 2510

For library systems and technical services:

Mailing Address

Great Library
Law Society of Ontario
Osgoode Hall, 130 Queen Street West
Toronto, Ontario M5H 2N6

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Accessing the Great Library in Osgoode Hall  

The Great Library is located in Osgoode Hall at the northeast corner of Queen Street West and University Avenue in downtown Toronto. The nearest subway station is Osgoode. Parking is available at Toronto City Hall.

On weekdays from 9:00 AM to 5:00 PM, all library users can enter Osgoode Hall through the main entrance on the south side of the building opposite Queen Street West.

On weekday evenings after 5:00 PM, on weekends and on holidays, the main entrance to Osgoode Hall is closed. During these hours, only Law Society licensees and articling/LPP candidates may access the library.

Entry to the building is through the Law Society reception doors on the east side of Osgoode Hall. Law Society identification is required. If the inner entrance doors are locked, please press the service bell located above the automatic door opener on the post to the right of the double doors.

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Photography & Filming in the Great Library

Visitors are welcome to take photographs of the library for their personal/non-commercial use using hand-held cameras. No formal approval is required. We do ask that you not disturb, or take photos of, library users or staff.

Wedding and engagement photography is not permitted in the library.

Prior written approval from the Law Society is required for all other photography or filming in the library.  Contact: Roseanne Barbachano, Law Society of Ontario, at rbarbach@lso.ca.

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Regular Hours  

Mon - Fri:  9:00 AM to 10:00 PM
Sat:  9:00 AM to 5:00 PM
Sun:  12 noon to 5:00 PM

Summer Hours (July - August)

Mon - Thurs: 9:00 AM to 10:00 PM
Fri: 9:00 AM to 5:00 PM|
Sat - Sun: closed

Ask a Law Librarian (Reference Services)

Mon - Fri:  9:00 AM to 5:00 PM

Library hours for members of the public, please refer to Library Rules for Public Users 

Holiday Closures 2018  

  • New Year's Day, January 1
  • Family Day, February 19
  • Good Friday, March 30
  • Victoria Day, May 21
  • Canada Day, July 1
  • Canada Day observed, July 2
  • Civic Holiday, August 6
  • Labour Day, September 3
  • Thanksgiving Day, October 8
  • Holiday closures – December 24 through December 26
  • New Year’s Eve, December 31


Library hours may change due to building closures, systems updates, etc.

See Today's Hours on our homepage for the most current information. 

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About Our Collections

Current Practice Resources  

As the country's largest practitioners' library, we maintain an extensive collection of texts, loose leaf services, CLE (Continuing Legal Education) program materials, government documents, law journals and other commentary on all major areas of law, from appellate advocacy to zoning law.

Cases and Legislation

Canadian law reports, statutes, regulations, bills and gazettes, as well as selected primary sources from the U.S., U.K., Australia and New Zealand.

Historic Legal Materials  

This collection includes historic statutes, early editions of leading Canadian, British and American legal texts and sources of Canadian legal history. Also included is the Riddell Canadian Library, a unique collection of books on local history, political life, religion, government, and the development of law in Canada, particularly in Ontario.

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 Accessing Our Collections


  • InfoLocate searches the print and electronic holdings of the Great Library, the Ontario County and District Law Association Libraries, as well as the contents of various websites and digital collections, such as Law Society CPD papers. Use InfoLocate to search for books, journals, other print materials, e-books, e-journals, Law Society of Ontario CPD articles and web resources.


  • AdvoCAT is the catalogue of print and electronic holdings of the Great Library and the Ontario County and District Law Association Libraries. Search AdvoCAT to find books, journals, other print sources, and e-books held in the libraries’ collections.

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