Dot Porter, Curator, Digital Research Services at the University of Pennsylvania Library, presents a video orientation to LJS 409, two brief alchemical works written by a father for his son. Encoded alphabets are used occasionally in the manuscript, and a key is included (f. 3r). The item is undated; possibly copied in the 16th or 17th century.
You can read the complete record for this document (and find links to digitized copies) on Franklin. You can also download a copy of this video from ScholarlyCommons, the University of Pennsylvania’s open access institutional repository.
The Schoenberg Institute for Manuscript Studies 