If you are doing Black genealogy research this offering from the Library and Archives Canada may be helpful. What it offers is the contents of a book listing Black Loyalists who left the United States after the Revolutionary War. Listed is the person's name, age, physical description, and some comments (if you are lucky).
I have given you two links below. The first is to a page at the Library and Archives Canada which gives historical background and an explanation of what the book contains. This is necessary to get the most out of the second link which takes you to the transcription of the book at the Black Loyalists site. You can get to the second link by following directions in the first link, but the trail can be confusing, so I've given you starting and ending points here. When you use the second link (you may have to copy and paste it to your browser), click on "documents" in the left pane of the page, then click on "Official Documents and Proclamations," then you will find a link to the book.
Carleton Papers – Book of Negroes, 1783 - Library and Archives Canada:
This note comes from the Libarary and Archives Canada website:
Important Note about Terminology