This document discusses the management of e-book collections in libraries and the implications for the economic management of libraries. It notes that the addition of digital formats like e-books has led to dramatic changes in how libraries are planned and managed. Specifically, it discusses how e-book collections impact three main areas of library processes: 1) purchasing processes, 2) collection organization processes, and 3) collection circulation processes. Within purchasing, it describes different business models libraries must consider, such as pricing and access models. It also discusses implications for organizing and circulating e-book collections.