There are multiple bands named here on last.fm under Black Maria:
These are photos from concerts where Black Maria played, so they may be of other bands that played the concert as well.
Alkaline Trio / The Lawrence Arms / Black Maria May 26, 2006 Calgary, Alberta, Canada Uploaded by Elliot Mereski
Sum 41 / No Warning / Black Maria Jan 23, 2005 Calgary, Alberta, Canada Uploaded by Elliot Mereski