Electronic index that provides references to (Plat Book) in series C2123, (Plats from Land Records) in series C2775 and C2776, and (Plats from Equity) in series C2777 and C2778. The entries will serve also as an authority file for (Subdivision Plats, KE) in series S1248. The index is derived from index cards created by the Land Office for (Plats on Microfilm, KE) in series S1542 for the years 1703-1948, volume indexes to land records for the years 1940-1993, and data in the Judicial Information System (JIS) beginning in 1993. The entries provide names of owners, tracts, or subdivisions, dates, and book and page numbers.