Considing, Bob. <br/><br/>
Landmarks of American history / 
Bob Considing ; illustrated by Fritz Kredel. 
 - Chicago :  Spencer press,  c 1951. 
 - Vols. :  ill. ;  22 cm. 
<br/><br/>V. 10- The Panama canal ; 
<br/><br/>314  314 
<br/><br/><label>Subjects--Topical Terms: </label><br/>American History.
<br/><br/><label>Dewey Class. No.: </label>973 / L235