“…Many research libraries have documented their experiences with acquiring e-books, 3 circulation and e-book usage analysis, 4 collaborative collection development, 5 and data-informed approaches to collection development. 6 This paper builds on that literature from the perspective of a large research library with a long history of collecting print monographs, a relatively recent history of programmatic collection assessment, and a collection development philosophy that posits collections as a service "in support of the teaching, research and public missions of the university" 7 -not collections as ends unto themselves.…”