Manly Palmer Hall [P.R.S.] MS. 224. 8 folios. 186 x 140mm. 18th Century. [This is included in the Bacstrom Collection MS. 102, Vol. 5.] [T. G. M.] A true Revelation of the Manual Operation for the Universal Medicine Commonly Called The Philosopher's Stone by the Celebrated Philosopher of Leyden As attested upon his Death with his own Blood 1662. [Addressed to] 'My Loving Cousin and Son the true Hermetic Philosopher. J. H.] [See MSS. Sloane 3636, 3772.]