Manly Palmer Hall [P.R.S.] MS. 242. 17 folios. 206 x 162mm. 18th Century. [This is included in the Bacstrom Collection MS. 102, Vol. 9.] Baron Georg von Welling. Three Processes, for obtaining the Tincture from [ ] and [ ], Enigmatically represented under this Character [ ] By Baron de Welling. Extracted from his Opus Mago Cabbalisticum. Homburg 1735 - 4to. By S. Bacstrom M. D. 1797.