Gringhuis, Dirk. <br/><br/>
Open door to the Great Lakes / 
Written, ill. by Dirk Gringhuis. 
 - [S.l.] :  Duell,  1966. 
 - xi, 141 p. :  ill., maps. 
<br/><br/><label>LCCN: </label>66017032 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Lakes region--History.
<br/><br/><label>Dewey Class. No.: </label>977