Vancouver's Leader in Transition toward Strong, Resilient, Complete Communities
Swap, donate or pickup seeds at Main Street village events (monthly potlucks, etc.) and at various events (VV demo villages at Main Street Car Free Day, Riley Park Festival, Autumn Shift Harvest Festival) and at various village gatherings around town.
For a look at why seed saving, and urban seed saving in particular, is essential to improve yield and food security resilience, read this article from Grist about a New York City local food activist and farmer who began to notice his saved seeds performed much better than those bought new; they were the survivors, and every year his seeds were culled from the best from the previous year. Of course his yields improved.