found: His Jacques-Louis David, 1987:t.p. (John Leighton)
found: Elliott, P. Picasso on paper, 2007:p. 8 (John Leighton; foreword) fore. (Director-General, National Galleries of Scotland)
found: 100 masterpieces, 2015:page 4 of cover (Sir John Leighton is Director-General of the National Galleries of Scotland. He was formerly Director of the Van Gogh Museum is Amsterdam and Curator of nineteenth-century paintings at the National Gallery in London. He is the author of numerous publications and exhibitions catalogues on nineteenth-century art)
