The book is about spiritual journey of Indian saints as seen in their Hindi literature.
<bdi><a href="https://en.wikipedia.org/wiki/en:Ramachandra_Dattatrya_Ranade" class="extiw" title="w:en:Ramachandra Dattatrya Ranade"><span title="Indian philosopher">Ramachandra Dattatrey Ranade</span></a>
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<a rel="nofollow" class="external free" href="http://ignca.gov.in/Asi_data/3243.pdf">http://ignca.gov.in/Asi_data/3243.pdf</a>