The Historic District Development Corporation Collection contains 114 rolled architectural plans. Included are neighborhood street maps, construction plans, property surveys, and building designs, sites that are all located in the Old Fourth Ward. Among these are Auburn Avenue Research Library (AARL) architectural sketches, site plans for Edgewood lofts, a large census tract map for the city, mayor Bill Campbell's approved plans for Atlanta's transportation and Solid Waste Services and several other items like these.