The work at hand contains probably the greatest single collection of records pertaining to the Delaware Indians assembled in one volume. Spanning the period 1857-1904 and touching on 20,000 individuals or households, these records, many of which establish relationships between family members, consist, in the main, of censuses or pay rolls, medical records, annuity payments, school attendance records, land improvement records, and abstracts based on the Final Rolls of Cherokees by Blood . . . of the Five Civilized Tribes.