Official precepts issued first by the colonial Governor or Secretary and later by the Commissioner of the Land Office, directing surveyors to map tracts of land and generate certificates of survey, which were required before a patent was issued. Earliest volumes also contains various records that were duplicated in the Patent Record series [MSA S11]. Some photostats. Indexed. General index in Warrants, Index series [MSA S22]. Partially described in: Land Office and Prerogative Court Records of Colonial Maryland, (Annapolis: Hall of Records Commission, 1946), pp. 24, 30-31.