Thomas Lord Busby's 1820 volume Costume Of The Lower Orders was part of a genre of books that featured colourful paintings depicting working people in the streets of London, generally viewed through the lens of an aristocratic voyeur. They're a kind of visual companion to Mayhew's classic London Labour and the London Poor (though this latter dates 20 years after Busby's book).
Spitalfields Life has lots more like this: see, for instance, the more staid illustrations in Richard Dightons City Characters (1824); and Marcellus Laroon's Cries of London (which was in print from 1687-1821).
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.