The Sonoma Index-Tribune E-Edition is an exact replica of the print paper that you can view on your computer, tablet or smart phone. It includes every story, ad and special publication that appears in the print paper. Subscribers can view past issues up to one year. The Sonoma Index-Tribune is a 5,300-circulation newspaper covering all of Sonoma and Sonoma Valley. Founded in 1879, the paper is now published twice weekly, on Tuesdays and Fridays. The Index-Tribune is owned by Sonoma Media Investments, Inc., which also owns the Press Democrat, the Petaluma Argus-Courier, the North Bay Business Journal and Sonoma Magazine.