In Staatsbibliothek zu Berlin Preussischer Kulturbesitz the author found a parchment bifolium with the annotation: Libellus ecclesie Posznaniensis (call number: Hdschr. 87, Nr. 3). On its folio 1 recto there is the Poznan annal I. It was published by Wojciech Ketrzynski in 1888 (Monumenta Poloniae Historica, vol. V) from the same manuscript, then in the library of the Seminary (Divinity School) in Poznan (later of the Archdiocesan Archives). Its later history is unknown but most probably it remained in Poznan until 1939. The rediscovered bifolium comes from the collection of Ernst Grumach (1902-1967). He was a classical philologist and literary historian of Jewish descent and during the years 1941-1945 was forced to work at the Zentralbibliothek des Reichssicherheitshauptamts in Berlin where he dealt with books and manuscripts brought there from all over Europe. That was also the fate of part of the collections of the Archdiocesan Archives in Poznan. Most probably the bifolium in question was also transported to Berlin at that time. Grumach may have taken it in April 1945 and after his death it was deposited at the Staatsbibliothek. Comparison of the 1888 edition with the manuscript shows that Ketrzynski's readings were correct (besides unimportant differences in some individual letters).