![William A. Knapp, "Untitled (Colorado River)", oil, c. 1900](http://www.davidcookgalleries.com/sites/default/files/styles/product-full-node/public/dcg_old/product_images/15569_w.jpg?itok=sSZ8TjjS)
Untitled (Colorado River)
circa 1900
oil,
signed lower right
20 ? x 13 ¼ inches
15569
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oil on board