Title
- Observationes in regularum ordinis1
- Observations upon the rise and progress of the late rebellion against King Charles the First1
- Occasional services1
- Occult texts4
- Octoechos1
- Oculus sacerdotis1
- Odes3
- Oedipi et sphingis dialogus1
- Offerings to be given to various deities1
- Office5
- Office of the Dead10
- Office of the Mother of God1
- Office of the Virgin1
- Offices4
- Officii et magistrati1
- Officium dicendum in ecclesiola supra illos, qui damnati sunt ad mortem1
- Ogasawara-den saiku kata kikigaki1
- Old Testament17
- Oleum effusum nomine tuum1
- Omnes ad praeda venient1