Source: Institute of Museum and Library Services, October 2008
From the press release:
The Institute of Museum and Library Services (IMLS) is pleased to announce the early release of data on state library agencies in the 50 states and the District of Columbia for state fiscal year (FY) 2007. The data were collected through the State Library Agencies (StLA) Survey, a voluntary survey conducted annually by IMLS. The FY 2007 StLA Survey is the 14th in the series.