Contents: Foreword. Preface. 1. Meghnad Saha: A Brief History/Ajoy Ghatak. 2. The Saha Equation and Beyond/Jayant V. Narlikar. 3. Scientific Work of Meghnad Saha Through Letters and Correspondences (1917-1936)/Prasenjit Saha. 4. Early Impact of Meghnad Saha’s Ionization Equation. 5. Meghnad Saha as Father/Meghnad Saha. 6. Tribute to Meghnad Saha/Professor Meghnad Saha. 7. Meghnad Saha’s Creations. 8. Lectures Delivered by Meghnad Saha. 9. Letters and Correspondences of M.N. Saha. 10. Articles Written by M.N. Saha on Famous Personalities. 11. Articles on Scientific Works of Meghnad Saha. 12. Importance of Saha’s Ionization Equation. 13. His Last Years. 14. Obituary. Professor Meghnad Saha was a great institution builder and had contributed so much for the betterment of our country. This book is a unique compilation of articles on Professor Saha written by his family members and also by eminent personalities; each article shows great contributions made by Professor Saha. Few important lectures delivered by Professor Saha are included to show his thoughts on restructuring scientific programmes and national planning for the betterment of society in pre-and post-colonial period. Apart from scientific works, correspondences with Subhas Chandra Bose during the formation of National Planning Committee mark interesting features of the book. Also reprinted is a 2011 paper (jointly by Russian and German research groups) which describes the importance of Professor Saha’s ionization theory after 90 years of its discovery; this paper should be of great interest to astrophysicists. The article on the creation of Positional Astronomy Centre (PAC) at Kolkata has been written with great zeal and emotion by Professor Amalendu Bandyopadhyay, M.P. Birla Institute of Fundamental Research, Kolkata and former director of PAC; the article would provide an account how it was conceptualized by Meghnad Saha as a part of Indian Meteorological Department.