Ellen Levine; Larry Johnson
|描述：||64 pages : color illustrations ; 19 x 23 cm|
|内容：||What was the Underground Railway?--How did the Underground Railway get its name?--When did the Underground Railway start running?--What did it mean to be a slave?--Could you buy yourself?--What dangers did you face?--Did you use special signals and codes on the Underground Railway?--Was everyone in the North against slavery?--What did the Presidents of the US think about the Underground Railway?--What would you do when you became free?|
|责任：||by Ellen Levine ; illustrated by Larry Johnson.|
Describes the underground railroad which helped slaves escape to freedom.