This work investigates the foundational principles and practical methodologies required to establish effective information services within a library environment. D. J. Foskett, a prominent figure in library science, draws upon his extensive experience in documentation and information retrieval to argue that the library's primary function is the active dissemination of knowledge rather than mere archival storage. He provides a framework for librarians to transition from passive custodians to active information intermediaries who facilitate the connection between users and specific data.

The text is regarded as a foundational contribution to the field of library and information science, reflecting the mid-20th-century shift toward proactive information management. Its focus on the professional responsibilities of the librarian makes it a significant reference for students and practitioners interested in the evolution of information services.