A diagram of the "Plain Scale." The horizontal axis is labeled "inclinations of meridians" and vertical axis is labeled hours. Various geometric shapes and lines such as chord, rhombus, tangents, secants, semi tangents, longitudes, and latitudes are drawn within the "plain."
A list of lands and enslaved persons owned by John Ball which includes Back River Plantation, it's swamps, lands for cultivation, pine land, a carriage house, smoke house, overseer's house, store house, corn house, a cooper shop and twelve "negro" houses. The document also lists that there are four enslaved men above fifty years of age, eighteen enslaved men under fifty and above twelve, ten enslaved boys under the age of twelve, seven enslaved women above fifty years old, nineteen enslaved women under fifty and above twelve and twenty enslaved girls under twelve.
A bond from Elias Ball to executors of William Carson's estate Alexander Robertson and John Blacklock for $8,000. The document includes records of paid installments.
