Listed as 'Blank' by Cook and Wedderburn (XXI.25 n. 3), who note Ruskin's statement that the frame is to be filled with work by van Eyck, 'whom I cannot yet justly represent'.
Ruskin, John, Catalogue of Examples Arranged for Elementary Study in the University Galleries (Oxford: Clarendon Press, 1870), cat. Standard no. 38
Ruskin, John, Catalogue of the Reference Series Including Temporarily the First Section of the Standard Series (London: Smith, Elder, [1872]), cat. Standard no. 38
Ruskin, John, ‘The Ruskin Art Collection at Oxford: Catalogues, Notes and Instructions’, Edward T. Cook and Alexander Wedderburn, eds, The Works of John Ruskin: Library Edition, 39 (London: George Allen, 1903-1912), 21, cat. Standard no. 38
The place is left for Van-Eyck, whom I cannot yet justly represent.