Gannett, Samuel S.  1861-1939. <br/><br/>
Results of spirit leveling in Illinois, 1896 to 1908, inclusive. 

 -  Govt. Print. Off.,  1910. 
 - 74 p. 
<br/><br/><label>LCCN: </label>gs 10000058  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Illinois--Altitudes.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 421