Founded in 2005, Must Not Sleep / Must Warn Others is a collective of photographers striving to promote positive social change through the power of photography.

This manifests itself in various ways including shows and books with proceeds going towards selected charities, pro bono work for non-profit organizations and personal projects with a heightened sense of humanity. Through it all, members seek to maintain a high standard of artistic integrity and quality.

Originally formed in Seattle, the group has grown to include dedicated photographers throughout the United States. MNS/MWO is not an agency or commercial-entity, rather a small collection of like-minded individuals passionate about life and photography.