This grant supports efforts by the American Institute of Physics (AIP) to catalog and digitize the Wenner Collection, a unique collection of 3,800 rare books and documents that cover the early development of physics and astronomy. The collection was carefully assembled and annotated by David Wenner, a wealthy, philanthropic science aficionado, and contains works—some more than five centuries old—by Ptolemy, Galileo, Huygens, Halley, Newton, Laplace, and many early-19th-century natural philosophers. AIP will scrupulously organize, classify, and catalog the entire collection in accordance with international and national library standards. Grant funds will support the hiring of a rare book cataloger to make decisions about priorities, storage facilities for the materials that will preserve Wenner’s original ordering and grouping, and the hiring of a digital assessment specialist to facilitate efficient, high-quality digitization of the collection. Additional funds will support various outreach activities to facilitate user engagement with the collection.