This comprehensive report brings together decades of research at Salmon Ruins, the earliest and largest outlier built outside Chaco Canyon at AD 1090. Original chapters from the 1970s excavations on architecture, ceramics, lithics, coprolites, kiva wall murals, and archaeobotanical findings, among others, are complimented by new research into room and feature usage, preservation and architecture, fauna, textiles and other perishables, wood-use and tree-ring dating, and ceramic typology and symmetry. In addition, the late Cynthia Irwin-Williams' prescient conclusions about Salmon and Chaco Canyon are published here for the first time. This is the first of three volumes.