If you are in need of market share information and don't know where to start, you might want to look at Market Share Reporter. This is a two volume reference book that is "an annual compilation of reported market share data on companies, products, and services." The entries are arranged by SIC categories, but the easiest way to find information is by using the indexes which include a company name index, brands index, and a products, services, names, and issues index. All entries also include source information. Market Share Reporter is located in the reference section of the library, behind the information desk. It's call number is HF5410 .M25 2007 Ref.