You can find this book, 'They Were Her Property: White Women as Slave Owners in the American South' at Bookshop.org. Unfortunately, slaves were used as labor for very long time in America...up to the 1960s.
"white women make up about 40% of all slave owners.
White women were active and violent participants in the slave market. They bought, sold, managed and sought the return of enslaved people, in whom they had a vested economic interest.
Owning a large number of enslaved people made a woman a better marriage prospect. Once married, white women fought in courts to preserve their legal ownership over enslaved people (as opposed to their husband’s ownership), and often won. “"
@jaysonmassey thank you for sharing. I ordered my copy