Ambler, Charles Henry, 1876-1957. <br/><br/>
A history of transportation in the Ohio Valley, with special reference to its waterways, trade and commerce from the earliest period to the present time / 
Charles Henry Ambler. 
 - Westport, Conn. :  Greenwood Press,  1970. 
 - 465 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0837129052 
<br/><br/><label>LCCN: </label>72-098804 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shipping--Ohio River Valley.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Ohio River Valley--Commerce.