The Hudson Bay Company archives have released a number of films taken in the northern communities of Canada.
One film is called Nitrate Treasures:
<iframe width="420" height="315" src="http://www.youtube.com/embed/a_sSH5ZQI3k" frameborder="0" allowfullscreen></iframe>
One film is called Nitrate Treasures:
<iframe width="420" height="315" src="http://www.youtube.com/embed/a_sSH5ZQI3k" frameborder="0" allowfullscreen></iframe>