I'm not aware of a large poster, if that is what you are looking for.
Adam Nathan has a hierarchy inside the cover of his book. (http://robrelyea.com/wpf/books)
I built a tool called XamlT which is an interactive class hierarchy for Xaml Vocabularies...http://xamlT.com
Thanks, Rob
Rob Relyea | Program Manager, WPF & Xaml Language Team
robrelyea.com | /blog | /wpf | /xaml
Rob,
I could not check adam nathan's book. But I checked your blog and the tool. Very good work. I was looking for object hierarchy since I worked with delphi previously.
Thanks,