From History of Canterbury Cathedral Library
- Shelfmark W/E-5-1/4
- Philip Melanchthon. Opera omnia.
- Bookseller's printed label on front pastedown: Sold by C.J. Stewart, 11 King William St. W. Strand, London.
- Charles John Stewart traded as a 'Theological bookseller' at 11 King William Street, W. Strand, London between 1837 and 1882.
- The Cathedral Library has a number of books with his label.
- BBTI (British Book Trade Index)