The Office of Coast Survey (OCS) within the National Oceanic and Atmospheric Administration -- founded in 1807 by Thomas Jefferson -- is responsible for producing nautical charts for all the waters of the US and its territories. The OCS home page offers anyone in need of nautical maps lots of well-maintained and timely resources. Historical charts (from the 1700s onward), information on wreck and other dangerous obstructions, OCS's Coast Pilot publications, and Print on Demand sale of the most up-to-date charts and maps all are available here. This is a very useful resource for both commercial or recreational mariners in need of nautical maps.