Portrait; lithograph, John Cockerill (1790-1840) drawn by Joseph Bartholomeus Vieillevoye, lithographed by N.J. Colleye, printed by P. Degobert, published by Ch. Vanmarck, Brussels, no date, [1840s?]. Print on laid india 47x38cm., image 33x26.3cm; with facsimile signature. Portrait, TQL standing facing front, l. hand on table by papers