From the observation, it is clear that this is a receipt which was used to confirm that the person bought a slave. This receipt was signed in a shop called Petty & Sawyers at a small and old town, Malilo, Zambia, in South Africa on May 10th, 1864. The cost of the slave was $4000, the slave was named Frances, it is written on the receipt that the payment was for a dark skinned slave. This receipt is from the time when the white people were unfair to the dark skinned people and treating them as a slave. Looking at this receipt, it was a common thing for the time.