Apothecary Readership and Print-Culture Reception of the Regimen-Sanitatis Workflow (1477–1501)

The Voynich Manuscript (Beinecke MS 408, c.1404–1438) is read here against a six-section court-physician workflow (astronomical / zodiac, herbal, the f58r preparation hinge, balneological, pharmaceutical, recipes) that the substrate registers as a structural rather than a decorative organisation [1]. The same workflow is independently legible in late-fifteenth-century early-print regimens addressed to a working apothecary readership. The 1477 Bologna incunabulum issued by Domenico de' Lapi for Sigismondo de' Libri (ISTC ib00314000), binding three regimen authors (Benedetto Reguardati of Norcia, Johannes Hispalensis, and Taddeo Alderotti) into one quarto, contains on folios 278–279 a printed two-column Latin quid-pro-quo substitution table citing Galenist authority (inquit Galienus) [2, 3]. Substitution tables of this kind belong to the operational shelf of an apothecary, not to the leisure shelf of a courtier or the abstract shelf of a scholastic. The same readership signature is cautiously visible in Wellcome MS.438 (Laufenberg + Salernitanus, later-fifteenth-century): the official catalogue records early ownership by Hans Jakob vom Staal and later acquisition in 1880 by the Basel apothecary Christian Gotthold Theodor Engelmann [4]. That later apothecary ownership supports an apothecary-readership comparison, but not historical use in a Langenthal working shop. Owner annotations attested on surviving copies of the Benedetto 1477 print indicate working apothecary use at presence-of-marginalia level; the specific transcriptions remain pending photographic re-validation [5]. At publisher/imprint level, the Bolt monographs describe approximately one thousand named apothecaries across some eighty-five towns from 1200 to 1600 [6, 9, 12]; the substrate's exact 1,029 / 85 / fourteenth-to-sixteenth-century formulation is internal and is not reproduced from the books here. The Bolt corpus is uncited in any Voynich publication located by the 2026-04-26 cross-reference-engine relay across the venues enumerated in [13]. The present paper does three things. Under the proposed six-section reading of MS 408, the 1477 print supplies a comparator for a regimen and apothecary workflow; this comparison does not establish identical content or historical readership of MS 408. It documents the editorial decisions of the 1477 print, most pointedly the embedded quid-pro-quo substitution table, as operational apothecary infrastructure. And it argues that the print-culture reception of the regimen-sanitatis genre, anchored on a Burgundian-state apothecary corpus that the Voynich field has not engaged, is the substrate-anchored entry into MS 408's pharmaceutical lane. The argument is not that MS 408 is itself a printed book; the argument is that MS 408 sits inside a workflow whose operational target audience is exactly the audience the 1477 print was edited for. Keywords: Voynich Manuscript, MS 408, regimen sanitatis, Benedetto Reguardati, Domenico de' Lapi, Sigismondo de' Libri, apothecary, quid pro quo, substitution table, incunabulum, Bolt corpus, Burgundian state, Wellcome MS.438, Laufenberg, Salernitanus, print culture, court-physician workflow.