As we approach the 18th International Street Medicine Symposium in Toronto this September, we thought it would be a good time to provide some background on our annual meeting. Around 2004, I was approached by a funder who wanted to support the replication of the “Operation Safety Net model” of street care. Although not entirely unique, it was one of only a few programs truly committed to full time medical street work. The first other program I learned about was Calcutta Rescue under the leadership of Dr. Jack Preger in India. When I visited Jack in December of 1993, the experience was an epiphany. I will never forget the feeling of realizing I was not alone. Prior to that, I thought I might be the only physician crazy enough to provide medical care under bridges. Even though Pittsburgh and Kolkata were radically different, the same forces of exclusion and the same passion for social justice were obvious. Not long thereafter, I learned of the Boston Healthcare for the Homeless program and the pioneering work of Jim O’Connell and his colleagues. After visiting them on street rounds, I knew this was a new field of medicine – even if it did not yet have a name.