Marshall, R. B.  1867-1949. <br/><br/>
Spirit leveling in Texas,  1896 to 1915, inclusive, 
R. B. Marshall, chief geographer; work done in cooperation with the state of Texas in 1902, 1903, and 1910, and with Harris county in 1915. 
 - Washington,  Govt. Print. Off.,  1916. 
 - 254 p.  pl.  23 1/2 cm. 
 - United States. Geological Survey.  Bulletin 637. .
<br/><br/> At head of title:  Department of the Interior. 
<br/><br/><label>LCCN: </label>gs 16000597  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Texas--Altitudes.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 637