1. University of Pennsylvania, Ms. Coll 390, Item 2170 DS ID: DS9237 Title: Tarkasaṅgrahadīpikāprakāśikā Author: Nīlakaṇṭha Date: circa 1700-1850.
2. University of Pennsylvania, Ms. Coll 390, Item 2171 DS ID: DS9238 Title: Tarkasaṅgrahadīpikāprakāśikā Author: Nīlakaṇṭha Date: circa 1700-1850.