Book excerpt: An archival accessioning program is the keystone of responsible collection stewardship and essential to providing both equitable access and meaningful contextualization of archives. In Archival Accessioning, editor Audra Eagle Yun approaches the acquisition of materials as a holistically oriented, programmatic activity that establishes and maintains baseline control for archival holdings. Combining principles, best practice, and real-world examples from eleven archives practitioners, Archival Accessioning is a forward-thinking guide that archivists can apply in a variety of institutional settings. Those working with archives, special collections, and local history materials will learn how to Identify core components of archival accessioning and critically analyze this work, Establish a thoughtful and successful program for taking intellectual and physical custody of materials, and Adapt firsthand professional perspectives to improve or modify existing practices.