Every once in a while you discover a real gem online. And this is a gem. A great flickr collection of Michael Tywman's 19th Century posters amongst some other ephemera. The typography in these is great. The poster on the far right of the image above is excellent, lovely use of colour. There is loads of great work in the set, it's worth digging around for a while. I think they are from the Centre for Ephemera Studies.