Tanner's manuscripts including papers relating to:
- English history, 16th-18th century, including papers relating to the Civil War
- Norfolk, 17th century
- Canterbury diocese, 17th century
- Norwich diocese, 16th-18th century
- Cambridge University, 16th-18th century
- Norfolk and Suffolk families, 16th-17th century
- Admiral Sir Thomas Allin, 1660-78
- Thomas Aquinas, 17th century