Dear Sir/Madam, We are pleased to inform you that the 4th International Symposium on Knowledge Engineering for Digital Library Design (KEDLD-2025) will be held at IIT Kharagpur from 3rd to 5th November 2025, jointly organized by the National Digital Library of India (NDLI) and the Central Library, IIT Kharagpur. The NDLI has successfully organized three symposia in this series so far, each contributing significantly to the discourse in this domain. As a distinguished professional, academician and researcher in the field of Library and Information Science, we are delighted to request you to participate and submit your research paper in this symposium. The Last Date for paper submission is extended to 15th September 2025. For more details about registration and paper submission please visit: 1. KEDLD 2025 Website: https://kedld.ndl.gov.in 2. Read Brochure: https://kedld.ndl.gov.in/wp-content/uploads/2025/08/Brochure.pdf We look forward to your positive response and participation in this symposium. With warm regards, Dr. B. Sutradhar Organizing Secretary, KEDLD-2025 National Digital Library of India (NDLI) IIT Kharagpur -- Hemanta Kumar Biswal Assistant Librarian Central Library Indian Institute of Technology Kharagpur INDIA