It is believed that the system started in 1787 when Isaac T. Hopper, a Quaker, began to organize a system for hiding and aiding fugitive slaves.
Opponents of slavery allowed their homes, called stations, to be used as places where escaped slaves were provided with food, shelter and money. The various routes went through 14 Northern states and Canada. It is estimated that by 1850 around 3,000 people worked on the underground railroad.
Some of the most best known of the people who provided help on the route included William Still, Gerrit Smith, Salmon Chase, David Ruggle, Thomas Garrett, William Purvis, Jane Grey Swisshelm, William Wells Brown, Frederick Douglass, Henry David Thoreau, Lucretia Mott, Charles Langston, Levi Coffin and Susan B. Anthony.
The underground railroad also had people known as conductors who went to the south and helped guide slaves to safety. One of the most important of these was the former slave, Harriet Tubman. She made 19 secret trips to the South, during which she led more than 300 slaves to freedom. Tubman was considered such a threat to the slave system that plantation owners offered a $40,000 reward for her capture. Stations were usually about twenty miles apart. Conductors used covered wagons or carts with false bottoms to carry slaves from one station to another.
Runaway slaves usually hid during the day and travelled at night. Some of those involved notified runaways of their stations by brightly lit candles in a window or by lanterns positioned in the frontyard. By the middle of the 19th century it was estimated that over 50,000 slaves had escaped from the South using the underground railroad. Plantation owners became concerned at the large number of slaves escaping to the North and in 1850 managed to persuade Congress to pass the Fugitive Slave Act. In future, any federal marshal who did not arrest an alleged runaway slave could be fined $1,000. Any person aiding a runaway slave by providing shelter, food or any other form of assistance was liable to six months' imprisonment and a $1,000 fine. The Fugitive Slave Act failed to stop the underground railroad. Thomas Garrett, the Deleware station-master, paid more than $8,000 in fines and Calvin Fairbank served over seventeen years in prison for his anti-slavery activities. Whereas John Fairfield, one of the best known of the white conductors, was killed working for the underground railroad.
According to Walter Hawkins slaves constantly talked about the possibility of escape: "there arose in some an irrepressible desire for freedom which no danger or power could restrain, no hardship deterred, and no bloodhound could alarm. This desire haunted them night and day; they talked about it to each other in confidence; they knew that the system which bound them was as unjust as it was cruel, and that they ought to strive, as a duty to themselves and their children, to escape from it".
The main problem was having to leave family and friends. Henry Bibb wrote in his autobiography that it was "one of the most self-denying acts of my whole life, to take leave of an affectionate wife, who stood before me on my departure, with dear little Frances in her arms, and with tears of sorrow in her eyes as she bid me a long farewell." They also knew that there was the possibility that if they evaded capture, their closest relatives would be severely punished.
They also knew that successful escapes were rare. Slaveowners used bloodhounds to trace their slaves. Problems of finding food and shelter in a hostile environment and the absence of maps were also other factors in understanding why most slaves failed in their bids for freedom. Moses Grandy explained the problems that runaways faced: "They hide themselves during the day in the woods and swamps; at night they travel, crossing rivers by swimming, or by boats they may chance to meet with, and passing over hills and meadows which they do not know; in these dangerous journeys they are guided by the north-star, for they only know that the land of freedom is in the north. They subsist on such wild fruit as they can gather, and as they are often very long on their way, they reach the free states almost like skeletons."
Within a few days of leaving the plantation most runaways were brought back and heavily punished. Francis Fredric was free for nine weeks but was captured and received 107 strokes of the whip. Moses Roper, received 200 lashes and this was only brought to an end when the master's wife pleaded for his life to be spared.
A study of runaway notices of local newspapers revealed that 76 per cent of all fugitives were under 35, and 89 per cent of them were men. Another study suggested that field slaves were more likely to try and escape than house slaves.
The development of the underground railroad increased the number of slaves who were able to reach safety. By the middle of the 19th century it was estimated that over 50,000 slaves had escaped from the South using this method. Plantation owners became so concerned by these losses that in 1850 they managed to persuade Congress to pass the Fugitive Slave Act. In future, any federal marshal who did not arrest an alleged runaway slave could be fined $1,000. Any person aiding a runaway slave by providing shelter, food or any other form of assistance was liable to six months' imprisonment and a $1,000 fine.
In 1850 Congress passed the Fugitive Slave Law. Only John P. Hale, Charles Sumner\, Salmon Chase and Benjamin Wade voted against the measure. The law stated that in future any federal marshal who did not arrest an alleged runaway slave could be fined $1,000. People suspected of being a runaway slave could be arrested without warrant and turned over to a claimant on nothing more than his sworn testimony of ownership. A suspected black slave could not ask for a jury trial nor testify on his or her behalf.
Any person aiding a runaway slave by providing shelter, food or any other form of assistance was liable to six months' imprisonment and a $1,000 fine. Those officers capturing a fugitive slave were entitled to a fee and this encouraged some officers to kidnap free Negroes and sell them to slave-owners.
Many people associated with the Underground Railroad only knew their part of the operation and not of the whole scheme. Though this may seem like a weak route for the slaves to gain their freedom, hundreds of slaves obtained freedom to the North every year.
The resting spots where the runaways could sleep and eat were given the code names "stations" and "depots" which were held by "station masters." There were also those known as "stockholders" who gave money or supplies for assistance. There were the "conductors" who ultimately moved the runaways from station to station. The "conductor" would sometimes act as if he were a slave and enter a plantation. Once a part of a plantation the "conductor" would direct the fugitives to the North. During the night the slaves would move, traveling on about 10-20 miles (15-30 km) per night. They would stop at the so-called "stations" or "depots" during the day and rest. While resting at one station, a message was sent to the next station to let the station master know the runaways were on their way. Sometimes boats or trains would be used for transportation. Money was donated by many people to help buy tickets and even clothing for the fugitives so they would remain unnoticeable.
Some people %u2014 most of them, naturally, pro-slavery Southerners %u2014 were upset by this whole process. Resulting from many efforts to fix this ostensible problem, a law was passed that allowed slave owners to hire people to catch their runaways and arrest them. The fugitive slave laws became a problem because many legally freed slaves were being arrested as well as the fugitives. This then encouraged more people of the North to become a part of the Underground Railroad. Oftentimes, "bounty hunters" would abduct free blacks, and sell them into slavery.The Underground Railroad stretched for thousands of miles, from Kentucky and Virginia across Ohio and Indiana. In the Northerly direction, it stretched from Maryland, across Pennsylvania and into New York and through New England.