The Academic Libraries: 2006 First Look summarizes services, staff, collections, and expenditures of academic libraries in 2- and 4-year, degree-granting postsecondary institutions in the 50 states and the District of Columbia. The nationâ??s 3,600 academic libraries held 1.0 billion books; serial backfiles; and other paper materials, including government documents at the end of FY 2006, and there were 144.1 million circulation transactions from their general collections. During the same time period, academic librariesâ?? expenditures totaled $6.2 billion.