The State Archives holds about 80,000 maps in various formats, dating from the 17th century to the present. Among the maps are surveys of lands granted by the Colony and State of New York, but these maps do not show occupants of lands. The principal index to early manuscript maps created or filed by State agencies is David E. E. Mix, Catalogue of Maps and Surveys, in the Offices of the Secretary of State, State Engineer and Surveyor, and Comptroller (Albany: 1859; repr. 1981). Most of the maps listed in this catalog have been transferred to the State Archives. If a map is fragile, use and copying will be restricted.