Proprietary records that list persons owning land and owing annual quit rents to Lord Baltimore. Entries include owner's name, tract name, and amount of rent paid. Contains some photostatic copies. Indexed by the MARYLAND INDEXES Debt Book, Index series [MSA S1430] and Debt Book, Index series [MSA S14]. Volumes arranged by county. Described in: Land Office and Prerogative Court Records of Colonial Maryland, (Annapolis: Hall of Records Commission, 1946), pp. 33-44. For 1733-1774 also available on microfilm, [MSA SM124], 3 reels. Debt Books for Frederick County, 1764-1765, are found in the following Scarf Collection box: MSA S1005-145.