Using the Library of Congress Subject Headings while you're looking at records in the catalog is a great way to find more books on the same topic. It also means that you can search for books outside the Five Colleges with those same terms, via World Cat.
LC Subject Headings that might be relevant are:
India History Autonomy and Independence Movements
India History British Occupation
India History Partition
India Politics and Government
Islam India History
Nationalism Religious Aspects Hinduism
Nationalism Religious Aspects Islam
Sub-headings might include:
Sources [use this for collections of primary sources]
Discover: Start here for books, articles & more
Simultaneously search research databases plus the Five Colleges Libraries Catalog to find full-text articles, books and more.
Historical Abstracts (1955 to present)
Scholarly literature about world history since 1450 (excluding the United States and Canada).
Index Islamicus (1906 to present)
Covers literature on Islam, the Middle East and the Muslim world, including Muslim areas of Asia and Africa.
Gale Virtual Reference Library
70 reference e-books, including multivolume works like the Encyclopedia of Religion, American Decades, and more.
International Encyclopedia of the Social and Behavioral Sciences
Scholarly surveys of all aspects of social sciences.
Print-format Reference Works
Times of India (1838-2003)
Part of ProQuest Historical Newspapers, this is a searchable archive of the Times of India, combining The Bombay Times and Journal of Commerce, The Bombay Times and Standard, and The Times of India.
Searchable full text of hundreds of British periodicals from the late 17th century to the early 20th, with high-resolution facsimile page images.