"Leboff, David and Tim Demuth; No Need to Ask! Early Maps of London's Underground Railways, Middlesex: Capital Transport Publishing, 1999. Manufacturer of enamelled steel panel display signs, in particular, maps of the London railway system mounted in the the stations; popularly called 'Chromo of Wolverhampton'"@en . . "Chromographic Enamel Company, Ltd."@en . . "2015-06-18"^^ . "2015-07-16"^^ . "2015-08-25"^^ . "2015-06-18"^^ . "2015-07-16"^^ . "2015-08-25"^^ . "est. 1885"@en . . .