1. University of Pennsylvania, Ms. Coll 390, Item 1243 DS ID: DS8383 Title: Brahmasūtramitākṣarā Author: Annambhatta Date: circa 1650-1799.
2. University of Pennsylvania, Ms. Coll 390, Item 2119 DS ID: DS9186 Title: Tarkadīpikā Author: Annambhatta Date: 1687.