Harriet Tubman was born around 1820 in Maryland. Tubman's parents were both slaves. Tubman went to Philadelphia. There, she learned about the Underground Railroad. The people who ran it helped runaway slaves find their way north. Tubman started helping with the Underground Railroad. She helped to bring slaves north. During the 1850s, Tubman returned to the South many times to help free other slaves. In all, she rescued about 300 slaves. She managed to get every one of them to the free North. Tubman had to be very careful. She carried sleeping powder for babies who cried. That way, people looking for escaped slaves wouldn't hear the babies crying. Frederick Augustus Bailey was the son of a slave woman and a white man. He was born in Maryland