Boethius — 12th century, first half; English

Ps.-Johannes Scottus Eriugena — 12th century; English

Euclid, Ahmed ibn Yusuf, etc. — 13th century, first half to late; English

Treatises on proportions — 13th century, beginning; English

Hermannus Contractus — 12th century; English

Treatise on logic — 12th century, third quarter; English

Sermon notes — 14th century; English