Black, James,  1879-1949. <br/><br/>
The unlocked door, 
by James Black. 
 - New York,  London,  Harper,  1931. 
 - viii, 232 p., 1 l.  20 cm. 
<br/><br/> Children's stories  "First edition." 
<br/><br/>"Books by Dr. Black" : 1 leaf at end. 
<br/><br/><label>LCCN: </label>31007851  
<br/><br/><label>LC Class. No.: </label>BV4571  / .B53 
<br/><br/><label>Dewey Class. No.: </label>244