Clark Keelboat

Lewis And Clark traveld by boats called keelboats and pirogues can someone show me pictures?
that i can sketch the boats. I need a top view.
A keelboat is like a rowboat ot raft in shape – you can get the general idea from the link in the previous answer – what makes it a keelboat is a “keel”, or ridge on the bottom of the boat in the center – see this photo looking at a boat from the front: http://www.pmaynard.lunarpages.com/index_files/updated_photos/18-bow-keel.jpg
A pirogue is a canoe made by hollowing out a log:
http://images.search.yahoo.com/search/images?p=pirogue&fr=yfp-t-501&toggle=1&cop=mss&ei=UTF-8
It doesn’t have to have the “side” structures (outriggers).
Lewis and Clark Center Keelboat “River Roots”