Get this great Vintage 1960s Sonoma & Petaluma State Historical Monuments California Brochure including Sonoma Mission, Vallejo Home, Sonoma Barracks and Petaluma Adobe. The paper is very thin like newspaper print and is browned. It has a turned up corner on the bottom edge and the paper is slightly browned from age. Folded it is sized 6" x 9" and open it is sized 18" x 9".