XPS Reader is a WPF reader of XPS Documents with the Mitsu's control WPFControlBook, to read a document like a book.
The application convert the XPS Documents pages in PNG files, and these files are added to the WPFControlBook to be built like a book. You can turn pages with the mouse, with a double-click on a page, to click on the button Next or the button Previous.
The link on my french blog : http://blogs.developpeur.org/audrey/archive/2008/06/29/wpf-xps-reader.aspx
You can find the WPFBookControl on the Mitsu's CodePlex Project : WPFBookControlEdit v0.2 : Now you can read horizontal documents like this :