Here I am suggesting you some best History Books for preparation of UPSC (Union Public Service Commission) Exam.

Books on Indian History:

Ancient India:
• Ancient India (NCERT) Prof. R.S. Sharma
• The Wonder That was India A.L. Basham
• Ancient India - An Introductory Outline D.N. Jha
• History of India, Vol. I Romila Thapar
• Aspects of Political Ideas and Institutions in Ancient India R.S. Sharma (only Conclusion)
• Material culture & Social Formation in Ancient India R.S. Sharma
• Indian Feudalism- R.S. Sharma
• Ashoka & Decline of the Maurya Romila Thapar
• A History of South India K.A. Nilkantha Sastri
• Ancient India and Indian Archaeology Archaeological Survey of India
• Ancient India Social and Culture - Luniya
• An Advanced History of India - R.C. Majumda, H.C. Raychaudhurai, - Kalikinkar Datta
• Ancient India - L.Mukherjee
• The rise of civilization of India and Pakistan - Bridget and Raymond Allchin
• Mauryan : Ashoka and the decline of mouryan empire - Romila Thapar
• NCERT (11th)
• Indus Civilization - (a) IGNOU booklet no. 2

Medieval India:
• Medieval India (NCERT) Satish Chandra
• Medieval India (Macmillan) Satish Chandra
• The Wonder That was India (Vol.2) S.A.A. Rizvi
• The Agrarian System of Mughal India 1556-1707 Irfan Habib
• The Mughal Empire J.F. Richards
• Urban Dynamics H.C. Verma
• The Marathas - Gordon
• Advanced study in the History of Medival India - Volume I J.L. Mehta
• Advanced study in the History of Medival India - Volume II J.L. Mehta
• Advanced study in the History of Medival India - Volume III J.L. Mehta
• Medival India - Volume I Satish Chandra
• Medival India - Volume II Satish Chandra
• Medival India - L. Mukherjee
• The Advanced History of India - Majumdar, Raychaudhuri & Datta
• Social life and cultural life of both Delhi Sultanate and Mughal India - J.L. Mehta
• A history of South India - K. A. Nilakanta Shastri

Modern India:
• Modern India (NCERT) Bipan Chandra
• Modern India (Macmillan) Sumit Sarkar
• Anatomy of the Raj (PPH) Suhash Chakravarty
• The Raj Syndrome (Penguins) Suhash Chakravarty
• VAID's Fundamentals of History Series
• Administrative History Pravin Kumar
• Constitutional History Pravin Kumar
• Social History Pravin Kumar
• Freedom Struggle Pravin Kumar
• Peasant Movements in India D.N. Dhanagare
• India's Struggle for Independence Bipan Chandra and others
• Gandhi -B.R. Nanda
• Gandhi -Judith Brown
• Freedom Struggle (NBT) - Bipan Chandra & others
• Modern Indian History - Groover & Grooover.
• A struggle for Independence - Bipin Chandra
• Freedom Struggle - Bipinchandra
• Modern India - L. Mukherjee
• A new look into the modern Indian history - B.L Grover
• Freedom struggle - Bipin Chandra, Varun Dey and Amlesh Tripathy (NBT)
• India's struggle for independence - Bipin Chandra
• Modern India - Sumit Sarkar

World History:
• The story of Civilization, Vol. 2 (NCERT) Arjun Dev
• Contemporary World History (NCERT) Arjun Dev & others
• The Mainstream of Civilization Strayer, Gatzke & Harbison
• Western Civilizations Burns & others
• Industry & Empire E.J. Hobsbawm
• Age of Revolution E.J. Hobsbawm
• Age of Capital E.J. Hobsbawm
• Age of Empires E.J. Hobsbawm
• Social basis of Democracy & Dictatorship B.J. Moore
• Europe Since Napoleon David Thompson
• Europe Since 1815 W.C. Craig
• Europe Since 1870 James Joll