Table 1. Number of map documents digitized from historical maps.

Map series	Years	No. of map documents	Scale	Digitized objects
Land Survey Maps (LSMs)	1757–1863	39	1:4,000–1:8,000	Property units, buildings
Military Topographical Survey Maps (MTSMs)	1812–1820	11	1:20,000	Roads, buildings, streams, wetlands, lakes
Topographic Maps (TMs)	1860–1865	2	1:100,000	Roads, buildings
Economic Maps (EMs)	1910–1915	7	1:20,000	Property units, buildings, roads, railroads,
Cadastral Dossiers (CDs)	1757–1914	Approximately 150	1:1,000–1:8,000	Property units