1. University of Pennsylvania, Ms. Coll. 390 Item 1787 DS ID: DS8694 Title: Muhūrtamārtaṇḍa Author: Nārāyaṇa Samudrika Date: after 1849.
2. University of Pennsylvania, Ms. Coll. 390 Item 1876 DS ID: DS8968 Title: Muhūrtamārtaṇḍa Author: Nārāyaṇadaivajña Date: 1719-1903.