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Wolski found the sheets only a year after Artur Benis (1865–1932), a historian at the Jagiellonian University in Cracow who was busy researching the history of book printing in Poland, had published his work on inventories of Cracow's mid-16th-century print shops. Such inventories were typically made for the purposes of inheritance proceedings and contained lists of books which a print shop owner had printed, but died before he could sell them. And so, in an inventory made in 1555, after the death of Helena Unglerowa, the widow of Florian Ungler (d.&nbsp;1536), who had been the first person to print books entirely in Polish, there was a mention of 100 unbound copies of a book whose rather unpronounceable title (to anyone who isn't Polish) was ''Kuchmistrzosthwo'' (''Cooking Mastery'').<ref>{{Cyt

But that's not all. The same year 1891 saw the publication of two further works which shed more light on these two sheets. Firstly, Benis published the second volume of his ''Inventories'', which contained a mention of a single copy of a cookbook owned by Helena Gałczyna (d.&nbsp;1549), the widow of another Cracow printer, Maciej Szarffenberg (d.&nbsp;1547). Additionally, four copies of the same book were listed in the inventory of a Szymon Tyrlikowski's book collection. The title indicated in both inventories, however, was written as ''Kucharstvo'' or ''Kucharsthvo'' (''Cookery'').<ref>{{Cyt