The Federal Act of March 2, 1867, divided the southern states into five military districts for the partial purpose of holding a constitutional convention in each state as part of the process of being readmitted to the Union. The officials of the Federal Army in Georgia, who then constituted the government, appointed registrars to register voters who would then elect delegates to the state's constitutional convention. Georgia was then divided into forty-four districts of three counties each based on the State Senatorial Districts. To qualify to register, a voter had to take the oath of allegiance to the United States government and to swear he had never supported the Confederate States of America. These registrars then registered over 95,000 white and over 93,000 African-American voters.

Volumes for each district contain lists of qualified voters for that district. Information for each voter includes: (1) number; (2) date of registry; (3) name; (4) number and page number of the county's registration oath book where the voter's oath of allegiance is recorded (see RGSGSERIES 1-1-107); (5) race; (6) time of residence in state, county and precinct within a year; (7) state or county of birth; (8) when, how and where naturalized (Note: naturalization information is usually not given); (9) remarks, if any.