www.gutenberg-e.org/lowengard/C_Chap14.html ; http://en.wikipedia.org/wiki/Jacob_Christoph_Le_Blon for further refs.
AKL ; ThB 22 1928: 504 ; Choulant 1920: 35 & 265-6 ; P. Krivatsky: J. Hist. Med. 23 (1968): 153-8 ; Thornton & Reeves 1983: 77 ; Bamber Gascoigne: Milestones in Colour Printing 1457-1859 (1997: 8-10) ; Nissen: Zoolog. Buchillustration 1969/78 ; Margócsy 2014: 5, 167ff. & passim ; Cornelia Kemp: Aus drei mach eins. Ein Streifzug durch die Geschichte der Farbfotografie, Kultur und Technik 01/2009: 32-37, esp. p. 36; BNBF: Recueil. Oeuvre de Jacob Christoph Le Blon
Since 1719, J.C. Le Blon was active in London, where he owned a wall-paper factory in London; later he was active in Amsterdam, in France since 1732;