Allen, Thomas B. <br/><br/>
Harriet Tubman, secret agent  how daring slaves and free Blacks spied for the Union during the Civil War 
Thomas B Allen 
 - Scholastic bk. Club ed. 
 -  National Geographic  2006 
 - 191 p. 
 - Literacy place: level W .
 - Literacy place: level W .
<br/><br/><label>ISBN: </label>9780545156639 9780792278894 (hardcover) 9780792278900 (library binding)