1. University of Pennsylvania, Ms. Coll. 390 Item 867 DS ID: DS8022 Title: Laghuvyākhyā Author: Nārāyaṇatīrtha Date: circa 1700-1850.
2. University of Pennsylvania, Ms. Coll. 390 Item 1169 DS ID: DS8322 Title: Siddhāntabindulaghuvyākhyā Author: Nārāyaṇatīrtha Date: 1860.