Keene, Carolyn. <br/><br/>
Mystery train / 
[by] Carolybn Keene. 
 - New York :  Pocket Books,  1990. 
 - 220 p. ;  18 cm. 
 - A Nancy Drew and Hardy boys super-mystery .
<br/><br/> Nancy Drew and the Hardy boys join an elite group traveling on a private train from Chicago to San Francisco in an attempt to solve the theft of the Comstock diamond. 
<br/><br/> 7-A.  7.  Lexile 640  MetaMetrics, Inc. 
<br/><br/>
<br/><br/><label>ISBN: </label>0671674641 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diamonds--Fiction.<br/>Railroads--Fiction.<br/>Mystery fiction.
<br/><br/><label>Dewey Class. No.: </label>Fic