Earl, J. (2001). Building Conservation Philosophy. Donhead Publishing, Dorset.
- The practice of preservation: grounds for argument:
- Skin-deep preservation (ms83-93)
- Repair and replacement (ms93-96)
- Restoration and reproduction (ms96-100)
- Subtitute materials (ms101-102)
- Restoration by unravelling (ms102-107)
- Visible or invisible (ms108-111)
- Unseen structure (ms112-)
- Change of use (ms112-113)
- Additions (ms113-118)
- Chronology of conservation and the development of protective laws (from 1800) (ms149-2002)
- The SPAB manifesto (ms156-159)
- The Venice charter (ms160-163)
- The Burra charter (ms164-179)
- The Canadian code of ethics (ms180-193)