1. University of Pennsylvania, Ms. Coll 390, Item 934 Title: Māṇḍūkyopaniṣadbhāṣya Author: Ādi Shankara Date: circa 1700-1850.
2. University of Pennsylvania, Ms. Coll 390, Item 1091 Title: Māṇḍūkyopaniṣadbhāṣya Author: Ādi Shankara Date: circa 1700-1850.