The Walker Group, May 2, 2013.  A beautiful spring afternoon in Toronto, outside Robarts Library.

Walker Group, April 2013 Back row (L to R): Duncan Halverson-Smith, Gilbert Walker, Nikhil Gunari, Adrienne Tanur, Christina MacLaughlin, Weiqing Shi Front row (L to R): Alex Stewart, Mandy Koroniak, Xiaoji Xu, Colin Zamecnik, Liz Willsey, Kris Kim, Christopher Walters Missing: Aida Razi

Walker Group, April 2013
Back row (L to R): Duncan Halverson-Smith, Gilbert Walker, Nikhil Gunari, Adrienne Tanur, Christina MacLaughlin, Weiqing Shi; Front row (L to R): Alex Stewart, Mandy Koroniak, Xiaoji Xu, Colin Zamecnik, Liz Willsey, Kris Kim, Christopher Walters; Missing: Aida Razi