Roy, Ron <br/><br/>
The Empty Envelope. 

 - New York, NY :  Random House, Inc,  1998. 
 - A to Z Mysteries .
<br/><br/> Dink and his friends unearth the mysterious truth behind the envelopes incorrectly delivered to his house. 
<br/><br/><label>ISBN: </label>0-679-89054-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery and detective stories--Fiction