ARL is the bimonthly report on research library issues and actions from ARL (Association of Research Libraries), CNI (Coalition of Networked Information), and SPARC (Scholarly Publishing and Academic Resources Coalition). ARL reports on current issues of interest to academic and research library administrators, staff, and users; higher education administrators and faculty; information technologists and those who depend on networked information; as well as anyone concerned with the future of scholarly communication or information policy developments. Each issue explores a broad range of education topics of particular importance to research institutions and academic librarians. This April 2007 issue contains the following articles: (1) Advocating for Digital Scholarship: Highlights of the Report of the ACLS (Catherine Murray-Rust); (2) University of Chicago Explores Library-Faculty Partnerships in Uncovering Hidden Collections (Alice Schreyer); and (3) The Future of Preservation in ARL Libraries (Thomas Teper). (Individual articles contain references.)