1581. University of Pennsylvania, Ms. Coll 390, Item 1105 Title: Two upaniṣads Date: circa 1700-1850.
1584. University of Pennsylvania, Ms. Coll 390, Item 1108 Author: Ādi Shankara Date: circa 1650-1799.
1590. University of Pennsylvania, Ms. Coll 390, Item 1135 Author: Ādi Shankara Date: circa 1700-1850.