I don't know if this link will work but I searched for "river trees quilt pattern" and a pattern for a block came up. Here is the link which goes directly to a popup asking if you want to save or open the file:
http://www.google.com/url?sa=t&rct=j...,d.aWc&cad=rja
Happy Quilting!!
PS - Just tested the link and it works. You will not see anything unless you save or open the file. It really does go to a PDF of the block pattern, not a virus or anything
Okay - here is another link. It is probably the origin of the block because if you click on the link on this page, you go to a page with different blocks and the river trees is one of them. Use this one if you want to feel safer
plus it shows you the quilt all done.
http://www.quiltviews.com/river-tree-the-quilt