The Seaport Museum's charts and map collection ranges from the 17th century to the present and includes both printed and manuscript items. Geographic scope varies by time period, but extends from New York to the entire country and beyond. Among the manuscript maps that have been digitized are a mid-17th century early example of an anemograph, or a map that plots winds, and a 1874 “Sanitary & Topographical Map of the City and Island of Manhattan” published by Col. Egbert L. Viele (1825–1902), which remains a touchstone for many of the city's structural engineers, to be consulted before new foundations are poured across Manhattan today.