This book contains detailed explanations about each record group showing when and why they were created, where you will find them today and how and why you would want to access them. In addition, there are chapters or sections devoted to federal records such as immigration, military, naturalization and National Registration.

These amendments represent the totality of changes to the third edition (2006); that earlier edition, plus this supplement, constitute the "4th edition."

Descriptive brochure detailing those services and resources of the National Archives of Canada that are of interest to genealogists.