Sorry, I don't have any deed records for Georgia, so I can't help with the sale. The Georgia Archives has an index for land grants. Some have images, some don't. The image is a plat and description usually including the number of acres, date, nearest creek and neighbors. There are several grants for Samuel Harper. Link to search for Samuel Harper at Georgia Archives:

http://cdm.sos.state.ga.us/cdm4/results.php?CISOOP1=all&...