Johnson, Adrian Miles,  1932- <br/><br/>
America explored :  a cartographical history of the exploration of North America / 
Adrian Johnson 
 - New York :  Viking Press,  1974 
 - 252 p. :  ill. (some col.) ;  36 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>067011670X 
<br/><br/><label>LCCN: </label>74-006146 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>America--Discovery and exploration<br/>America--Discovery and exploration--Maps