Note: This calendar view maps the number of captures of http://www.albertasource.ca/realestate/multimedia/display_audio.php?url=http://www.albertasource.ca/realestate/audio/HeritageTrails_103.mp3&title=The%20housing%20shortage%20of%20World%20War%20Two.%20(part%20I), not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.