Title
- Regularium1
- Regulations1
- Regum Romanae atque imperatorum liber ex veteris Germanis exceptus auctoris1
- Relacion de la manera et forma1
- Relationi de diversi ambasciatori1
- Religious text1
- Reply to accusations made by Puritan ministers1
- Responsorium1
- Resurrection of Jesus Christ1
- Rule of Saint Augustine1
- Sacra poesis1
- Scale of perfection1
- Scholia1
- School miscellany1
- Scientific texts1
- Scritture de signori Medici1
- Seals of the planets1
- Sentence1
- Sententia declaratoria contra Elisabeth1
- Seven Penitential Psalms1