Derek Shanks is a 38 year old Toronto based black & white street and documentary photographer.
He recently photographed Olga, a woman who has commented here on my blog at times. The photos and some of her story can be seen on his blog:
All That I Am, All That I Have
Olga also let me know about an event she is organizing for the morning of Tuesday April 16th, 11am, if any of you are in Toronto and can attend to lend support.
Event details are on facebook:
MCS/EI/EHS, Housing & Human Rights: Press Conference
Seriously "Sensitive" to Pollution 
Here is an article, by John Bonnar at Rabble:
“Homeless woman with severe allergies forced to sleep on the streets of Toronto”
http://rabble.ca/blogs/bloggers/johnbon/2013/04/homeless-woman-severe-allergies-forced-to-sleep-on-streets-toronto