The Mehrangarh Museum enjoys an extended research facility in its manuscript library, The Maharaja Maan Singh Pustak Prakash. The library, within the fort itself, houses a rich collection of manuscripts from different periods on a variety of subjects; in all about three thousand Sanskrit, and two thousand Hindi and Rajasthani manuscripts besides five thousand 'bahis' or accounts and other documents.

The 'bahis' contain very useful and interesting information about the prevailing customs, etiquette and lifestyle of the Royal Household down the ages. Some of the 'bahis' concentrate on the lives of the royal ladies within the walls of the Zenana.

Over the years the Maharaja Maan Singh Pustak Prakash, incorporated into the Mehrangarh Museum Trust in 1977, has organized a number of seminars and conferences on various aspects of history and culture. The library, Pustak Prakash, itself provides excellent facilities for research scholars. A number of important papers and books have also been published by the MMSPP. Indeed, under the late Shri Narayan Singh Bhati, the well known scholar of Rajasthani language and history, the institute assumed a national reputation.