Library and Archives Canada
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Online, by fax or by mail

We will be pleased to respond to your inquiries. You can submit them online, by fax or by mail. Response time can vary from two to thirty working days, depending on the nature of your question and our workload.

Tips for writing an effective inquiry

  • Provide complete contact information.
  • Be precise. Specify the record or information you are looking for.
  • If your inquiry concerns an individual, give the person's full name, dates of birth and death, places where the person lived or worked, etc.
  • If you are sending your inquiry by mail, send photocopies only; never send original documents.
  • If, in the past, you have consulted Library and Archives Canada (LAC) sources relating to your inquiry, please mention these sources so that we do not duplicate your research and recommend those sources again.
  • If you have contacted LAC in the past (by mail, fax or online), please indicate the date and method used.


If you want to submit an online inquiry, please use the Ask Us a Question Form.

If you are interested in genealogical research and/or the files of military personnel (before and during the First World War, 1914-1918), please use the Genealogy Inquiry Form.

Any inquiry regarding the files of military personnel from 1918 until today (including the files of persons who served during the Second World War) must be signed and sent by mail or fax. The Genealogy and Family History page entitled Canadian Forces after 1918 explains the proper procedures for submitting this type of inquiry.

If you would like to request an appointment with Library and Archives Canada staff members who can assist you in conducting further research, please use the Ask Us a Question Form.

By fax


By mail

Library and Archives Canada
Client Services Division
395 Wellington Street
Ottawa, ON  K1A 0N4