- FondsSJCR - The Records of St John's College
- SubfondsSJGR - Governing records
- Series5 - Benefactors and Benefactions
- Subseries2 - Benefactions: scholarships / exhibitions / fellowships / lecturerships / studentships
- Sub-sub-series57 - Platt scholarships and fellowships
- File1 - Copies of will of William Platt
- Item1 - Copy of will of William Platt, 1632
- Item2 - Copy of will and codicils to will of William Platt