CoCoCo/15, held July 10-12, 2015 at Earthwood Building School and the surrounding area, was a great success, bringing enthusiasts from Sweden, Canada, Guatemala and all over the United States. This brand-new collection of 25 papers was shared and discussed by presenters and attendees. A list of topics includes case studies of large and small cordwood buildings, lessons learned by several experienced cordwood builders, bullnose corners, the architect-designed 10,000 SF Arcus Center for Social Justice in Michigan, a 7000 SF school in Guatemala, cordwood in Sweden and Nicaragua, cordwood flooring and siding, wood-to-mortar ratio, special design features and Stackwall Corners: Pros and Cons. This volume is highly recommended as the very latest on cordwood masonry evolution. 126 pages, almost all in color.