"Thompson, born on a Maryland plantation in 1812, escaped to Pennsylvania but fell into a harried itinerant pattern. The passage of the 1850 Fugitive Slave Act put him in danger even in free states ; after six months of work arranged by a Quaker, he and his companion were forced to leave by the appearance of slave hunters. Thompson started to make a life in Philadelphia, marrying and pursuing an education, only to conclude once more that he must run when several other fugitives in his neighborhood were arrested. This time he went to sea, joining a whaling vessel out of New Bedford, which comprises most of the final chapters..."--Dealer's description.