Manly Palmer Hall [P.R.S.] MS. 197. 39 folios. 206x162mm. 19th Century. [This is included in the Bacstrom Collection MS. 102, Vol. 13.] The Process of Philip Poney [Philoponus], for accomplishing the Tincture. As Practised By Quercitan's Daughter. Copied from an Antient M.S. 1805. 'Copy of a Letter, addressed to Mrs. Martin Uiel, By the Daughter of Quercitan on the Philosophers Stone.'