41. University of Pennsylvania, Ms. Coll 390, Item 1139 Title: Aparokṣānubhūti Author: Ādi Shankara Date: circa 1700-1850.
47. University of Pennsylvania, Ms. Coll 390, Item 1120 Title: Pañcīkaraṇa Author: Ādi Shankara Date: circa 1700-1850.
48. University of Pennsylvania, Ms. Coll 390, Item 1122 Title: Vākyavr̥tti Author: Ādi Shankara Date: 1876.