Cornell University Library Guides
Google Maps, Google Earth and the New Geography – provides an introduction to the mapping services provided by Google.
Geolytics – introduces the Cornell University Library holdings of Geolytics products.
Historical Census and Ward Maps – provides information on locating and using historical census and ward maps using the resources available at Cornell University as well as selected online resources.
Citation guides
Citing maps (Ohio Wesleyan University)
Guide to citing maps and atlases (McMaster University)
Citing Maps and Atlases (North Carolina State University)
Conversion utilities
Federal Communications Commission – this utility permits the user to convert latitude and longitude between decimal degrees and degrees, minutes, and seconds. A link is included to the National Geodetic Survey’s NADCON program, which allows conversions between the NAD83 / WGS84 coordinate system and the older NAD27 coordinate system. This utility requires that Javascript be enabled to perform the calculations.
Geographic/UTM Coordinate Converter – the JavaScript source code in this document may be copied and reused without restriction.
Google Maps Latitude/Longitude Popup – Simply click on the map on a location and it will provide you with the latitude and longitude in the callout window.
Interactive unit converter – online conversions for many measurement systems. Conversion tables are provided for both common (U.S., metric, etc.) and quite exotic units like Ancient Greek and Roman.
Copyright
Cornell Copyright Information Center
Distance Calculators
Great Circle Calculator – direct-line distances between two points of latitude and longitude .
Surface Distance between two points of latitude and longitude; also provides Great Circle Distances between select cities.
Sailing distances between United States ports – publication of the National Oceanic and Atmospheric Administration.
Sailing distances between departure ports, junction points, and arrival ports worldwide, organized alphabetically.