PHONEBOOK is a directory of independent and noncommercial art spaces, programming and projects throughout the United States and a collections of critical essays and practical information by the people who run them. PHONEBOOK 4 includes listings of hundreds of artist-run spaces, event series, unconventional residencies, alternative schools, and community resources; all the projects that form and support art ecologies across the nation, as well as critical reflections of their activities. The book acts as an archive of artist-run activity as well as a guidebook to communities across the nation, and is an essential resource for artists, organizers, art historians, and art audiences today. PHONEBOOK has been published by Threewalls since 2006.