The colon classification system emerged from a Meccano set discovered in a London toy store, serving as the foundation for the researcher's radical approach to information organization. By viewing library collections through a mathematical lens, this former educator transformed chaotic archives into structured, faceted databases that prioritized efficient retrieval and accessibility for all readers.
Transition to Library Science
Born in 1892 in Sirkazhi, S. R. Ranganathan began his career as a mathematician, holding faculty positions at universities in Mangalore, Coimbatore, and Madras. In 1924, he accepted the post of University Librarian at the University of Madras. Lacking formal training, he traveled to London to study Western practices. This exposure encouraged him to apply mathematical rigor to cataloging, leading him to reject the limitations of existing decimal classification systems in favor of his own faceted methodology.
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During his tenure at the University of Madras, which lasted from 1925 to 1944, Ranganathan formalized his theories. He published The Five Laws of Library Science in 1931 and developed the colon classification scheme by 1933. These works shifted library management from rote categorization to a dynamic, logic-based structure. His system acknowledged that any single item of information could be classified through multiple facets, ensuring that complex subjects were retrievable from various thematic viewpoints.
Institutional Influence
Ranganathan transitioned to professorships at Banaras Hindu University between 1945 and 1947, followed by a tenure at the University of Delhi from 1947 to 1954. During these years, he championed open access to materials and argued for universal education. His advocacy extended to the founding of the Madras Library Association, where he lobbied for the establishment of public libraries across India. His contributions were recognized globally, including his election as an honorary member of the International Federation for Information and Documentation in 1957.
Professional Recognition
Throughout his life, Ranganathan balanced his roles as a writer, teacher, and library scientist. He received the Padma Shri for his contributions to literature and education and was later honored with the Margaret Mann Citation in 1970. He remains a central figure in documentation studies, having established the first Indian school of librarianship to grant higher degrees. He died in 1972 in Bengaluru, leaving behind a legacy defined by his fundamental thinking on the structure of information.
Fast facts
- Born: 1892, Sirkazhi
- Died: 1972, Bengaluru
- Citizenship: India
- Primary Fields: Mathematics, Library Science
- Notable Publication: Five laws of library science
- Key Award: Padma Shri
- Education: University of Madras
- Notable Role: President of the Indian Library Association
Questions readers ask
What inspired Ranganathan's colon classification system?
He drew inspiration from a Meccano construction set he observed in a London toy store.
What is the core principle of Ranganathan's classification method?
He utilized a faceted approach, acknowledging that any piece of information can be classified through multiple distinct categories or perspectives.
Achievements
- Notable work: Five laws of library science
- Notable work: classification scheme
- Notable work: Indexing Theory, Indexing Methods and Search Devices
- Held posts at University of Delhi, University of Madras and University of Delhi
- Fields: library science and mathematics


