Williamson, R. S.  1824-1882. <br/><br/>
Report of a reconnaissance and survey in California, in connexion with explorations for a practical railway route from the Mississippi River to the Pacific Ocean in 1853 / 
by R.S. Williamson. 
 - [Washington :  s.n.,  1855] 
 - 61, 80 p. :  map, profiles ;  24 cm. 
 - H. Doc. ;  129 .
 - House document (United States. Congress. House) ;  33rd Congress, 1st session, no. 129. .
<br/><br/> Also published in: Report of the Secretary of War communicating the several Pacific railroad explorations, v. 3, report X.  Includes the "Preliminary geological report by William P. Blake, geologist and mineralogist of the survey."  Plates: [1] General map of a survey of California in connection with examinations for railroad routes to the Pacific Ocean made by order of the War Department, by R.S. Williamson ... [2] Route of a survey from the Pimas villages on the Rio-Gila to Mesilla on the Rio-Bravo-Del-Norte with a view to determine the practicability of a railroad from the Mississippi to the Pacific Ocean, made by Jno. G. Parke ... 
<br/><br/>With: Parke, John G. Report of explorations for that portion of a railway route, near the thirty-second parallel of latitude ... [Washington : s.n., 1855] 
<br/><br/> Wagner-Camp (4th ed.),  261:3b 
<br/><br/><label>LCCN: </label>rc 01000751  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--California.<br/>Railroads--California.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>California--Surveys.
<br/><br/><label>LC Class. No.: </label>J66  HE2771.A17  / serial 738