Photograph album comprises 16 black and white photographs of the Oscar Cooper Ranch in Mendocino County, California taken in 1931. The ranch was a cattle ranch that had also been known as 4 Pines or Gilmore Ranch. Most photographs include type-written labels describing the image and the attributes of the land depicted. Photographs show the landscape of the ranch including spring range and winter range grazing areas; hay and alfalfa fields; and barns or residences identified as Bennett Place and Home Place. Photographs also show ranch hands and other inhabitants of the ranch. There are three photographs joined to make a panorama of the summer range on Bald Mountain. Photograph album has envelope adhered to first page containing a hand-drawn map of the Oscar Cooper Ranch land holdings. Type-written notes adhered to back page of photograph album describe the attributes of the cattle ranch and locate the ranch as being near the Henshaw Eden Valley Ranch Road. Also contains one loose envelope holding a one film negative; envelope is labeled: Winter Range - Marx Ranch, Feb. 25, 1931. Address label of W.W. Willliams adhered to inside front cover of photograph album.