Electronic index that provides references to (Plat Book) in series C2425 and C2426, (Plats from Land Records) in series C2439 and C2106, and (Plats from Equity) in series C2440 and C2441. The entries will serve also as an authority file for (Subdivision Plats, CR) in series S1240. The index is derived from a volume with entries arranged alphabetically by names of owners, tracts, or subdivisions for 1812-1980, volumes with entries arranged chronologically by recording date for 1968-1993, and computer printouts arranged alphabetically by names of owners and subdivisions beginning in 1990. All indexes provide book and page references or case numbers, but the earliest volume excludes dates. This same book was filmed by the Land Office in 1951, now found in series CM1215 and CM1216.