Probably detached from one of four issues of Whiggeries and waggeries, London : William Strange, 1834. This publication reprinted wood engravings by Robert Seymour, Robert Cruikshank, and others which had previously appeared-- often with different captions-- in Figaro in London, also published by Strange. The identical image appeared in Figaro in London, no. 33, 1832, with the title Wetherell the fire-work maker.
Charles Wetherell as an artisan, in slovenly dress, sitting on a stool making fireworks. On the door: 'Weatherell Professor of Pyrotechny to the Corporation of Bristol'. He is surrounded by bundles of 'Squibs' and 'Rockets', by 'Crackers', boxes of 'Wild Fire, Inflammables', and 'Gunpowder', and a pile of 'Bristol Board'.