If you look under the Immigration and Settlement Correspondence section on Ancestry, you can now find a collection of letters from individuals requesting information or assistance to emigrate to Canada. These records date back to 1817 when soldiers began returning from the Napoleonic Wars. They were returning to a work force that was already over taxed due to displaced highlanders as well as the shift of need for worker skills due to the industrial revolution. This caused many people to look to the new world for a chance to change their circumstances and perhaps better their prospects for the future of their families.
Here is the link: http://search.ancestry.ca/search/db.aspx?dbid=3709