The Avro 594 Avian is prepared for the Mercy Flight to Fort Vermilion.  January 2, 1928.  Provincial Archives of Alberta, A11794.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/95711690@N03">Provincial Archives of Alberta</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/alberta_archives/14092038314/">Mercy Flight preparation</a>