hey, I have this book: Pigot & Co's National Commercial Directory - 1839 Which is A directory of London and its Suburbs; with an extensive Conveyance Guide, including valuable info connected with Railways.
Im not too sure what it's about as such, but it has quite a large amount of information on London in 1839. It has names, trades and residences, info on coaches, markets, newspapers, railways, vessels, wharfs etc..... Also names hospitals, infirmaries, dispensaries, asyleums, etc etc etc...
If anyone wants me to look something up for them for that year, just leave a message