text: The most notable veteran of this organization used contacts developed through it to guide the Combahee Ferry raid.
full_question: The most notable veteran of this organization used contacts developed through it to guide the Combahee Ferry raid. Members of this organization included the Coffin family and a woman who pretended to read a newspaper because an arrest warrant said she was illiterate. This organization may have used quilts and songs like "Follow the Drinking Gourd" to guide individuals between locations managed by "stationmasters." Members of this organization referred to the Ohio River as the "River Jordan." It helped guide individuals to Canada. For 10 points, name this organization run by "conductors" like Harriet Tubman that helped slaves escape.
first_sentence: The most notable veteran of this organization used contacts developed through it to guide the Combahee Ferry raid.
raw_answer: the Underground Railroad   