Report of the explorations in 1873 of the Colorado of the West and its tributaries, 
by Professor J.W. Powell, under the direction of the Smithsonian institution. 
 - Washington,  Govt. print. off.,  1874. 
 - 36 p.  25 1/2 cm. 
<br/><br/> Third preliminary report, dated May 1, 1874.  Also issued as House misc. doc. 265, 43rd Cong., 1st sess. (Washington, 1874) under title : Professor Powell's report ... 
<br/><br/><label>LCCN: </label>rc 01000193  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Colorado River (Colo.-Mexico)<br/>United States--Discovery and exploration.
<br/><br/><label>LC Class. No.: </label>F788  / .S649