The US Bureau of Labor Statistics has made available the April 1997 edition of its Handbook of Methods, in both HTML and Adobe Acrobat (.pdf) format. This 202 page book details the methodology by which BLS "obtains and prepares the economic data it publishes," providing the structural underpinning for such data topics as employment and unemployment, compensation and working conditions, occupational safety and health, productivity and technology, economic growth, and prices and living conditions. As such, it is a crucial information source for economists, statisticians, instructors, librarians, and business analysts.