A. The county clerk shall also keep a well-bound book in which shall be platted all maps of cities and towns, or additions to the same, cemeteries and other plats, required by law to be recorded within his county, together with description, acknowledgment or other writing thereon, and file the original plat in his office. He shall index such plat book under appropriate headings in the plat book. Provided, the county clerk shall be prohibited from recording a plat of any subdivision which is by name duplicative of the name of any platted subdivision of record in his county.

B. In the alternative, said record may be kept digitally if said records may be reproduced to their original size.