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=== Railroad maps === | === Railroad maps === | ||
=== Topographic or geologic maps === | === Topographic or geologic maps === | ||
*'''Fire insurance maps (Sanborn maps)''' of 12,000 cities and towns yield street names and specific properties and addresses starting in 1867. Using these with city directories can help locate urban ancestors in a given year. | *'''Fire insurance maps (Sanborn maps)''' of 12,000 cities and towns yield street names and specific properties and addresses starting in 1867. Using these with city directories can help locate urban ancestors in a given year. | ||
*'''Land ownership (cadastral) maps and plat books''' show boundaries of land plots, and usually the owners' names. | *'''Land ownership (cadastral) maps and plat books''' show boundaries of land plots, and usually the owners' names. | ||