| [T42554] | Initial O(Mnia quae). In Johannes de Sacrobosco, Algorithmus Joannis de Sacro Busto, Cracow: Jan Haller (printer), July 1521 (Warsaw, BN), fol. Aiir ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T44750] | Initial O(MNES). In Marcin Ujazdowski, M. Martini Viasdovii Pvblici ... In Orationem Ciceronis Post Reditvm In Senatv Commentarivs, Cracow: Stanisław Szarfenberger (printer), 1577 (Wrocław, Oss.), fol. A2r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T42609] | Initial O(Remus preceptis). In Mikołaj of Błonie, Tractatus sacerdotalis de sacramentis deq[ue] diuinis officijs [et] eor[um] administratio[n]ibus, Cracow: Jan Haller (printer), Rudolf (II) Agricola (publisher), 1519 (Warsaw, BN), fol. 60v ◼ | printing: impression | page: initial | white‑line woodcut | paper | book decoration: illustration |  | | | | | | |
| [T42612] | Initial O(Portet semper orare). In Mikołaj of Błonie, Tractatus sacerdotalis de sacramentis deq[ue] diuinis officijs [et] eor[um] administratio[n]ibus, Cracow: Jan Haller (printer), Rudolf (II) Agricola (publisher), 1519 (Warsaw, BN), fol. 64v ◼ | printing: impression | page: initial | white‑line woodcut | paper | book decoration: illustration |  | | | | | | |
| [T18399] | Initial O(PERA). In Johann Funck, Chronologia Hoc Est Omnivm Temporvm Et Annorvm ... computatio ..., Königsberg: Hans Lufft (printer), 1552 (Vienna, ÖNB), fol. A1v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T18516] | Initial O(CTAVVS). In Johann Funck, Chronologia Hoc Est Omnivm Temporvm Et Annorvm ... computatio ..., Königsberg: Hans Lufft (printer), 1552 (Vienna, ÖNB), fol. 2r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T20372] | Initial O(s iusti). In Missae Propriae Patronorvm Et Festorvm Regni Poloniae ..., Cracow: Andrzej (I) Piotrkowczyk (printer), 1611 (Kórnik, BK PAN), p. 15 ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T86642] | Initial O(MNIMODA). In Jan van Campen, Prouerbia Salomonis..., Cracow: Florian Ungler (printer), [after 19 February] 1534 (Olsztyn, Biblioteka MWiM), fol. Bviiv | printing: impression | page: initial | woodcut | paper | book decoration: illustration | | | | | | | |
| [T50221] | Initial O(To pan). In Cantional Albo Ksiegy chwal Boskych ..., Walenty Brzozowski (translator), Königsberg: Aleksander Augezdecki (printer), 15 March 1554 (Toruń, BUT), fol. C1r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25363] | Initial O( Namileyssy). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 159v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25361] | Initial O( Jezu). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 157r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25358] | Initial O( Blogoslawiony). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 153v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25356] | Initial O( Namilosciwssy). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 152v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25347] | Initial O( Panno). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 141v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25346] | Initial O( Jezu). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 140r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25342] | Initial O( Jezu). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 138v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25336] | Initial O( Panie Jezu). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 135v ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25333] | Initial O( Nalutosciwssy). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 132r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25330] | Initial O( Jezu). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 129r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |
| [T25328] | Initial O( Panie). In Żywot pana Jezu krysta ..., Baltazar Opec (compiler), Cracow: Jan Malecki (printer), Florian Ungler (printer), Jan Haller (publisher), 1522 (Cracow, BJ), fol. 128r ◼ | printing: impression | page: initial | woodcut | paper | book decoration: illustration |  | | | | | | |