A member of the Association of Research Libraries, the ULS ranks 22nd out of the ARL's 126 member libraries, placing it in the top 20% of North America's largest academic libraries and is the 29th largest overall library in the United States. The ULS has been commended for its use of technology, including the digitization of its unique collection and improving the accessibility of its online resources. Duane Webster, executive director emeritus of the Association of Research Libraries, notes that the ULS has "transformed not only own school's library but also the future of research libraries." The ULS has also been noted for its publication of new digital content in its D-Scribe Digital Publishing program.