What sort of collection is kept in special libraries?

The specific collection of materials that is kept in a special library will depend on the subject area or focus of the library and the needs of its users. Special libraries may have a collection of books, periodicals, manuscripts, electronic resources, and other materials that is specific to the library’s subject area or to the needs of the users. For example, a special library at a business might have a collection of materials related to the company’s industry or products, while a special library at a university might have a collection of materials related to a particular academic discipline. Special libraries may also have a collection of materials that is more specialized or in-depth than a general library, as they are often used by experts or researchers in a particular field.