Ice routes

Congress of the United States

United States

1789

Congress of the United States: At the second session, begun and held at the city of New-York, on Monday the fourth of January, one thousand seven hundred and ninety

United States

1790

Third Congress of the United States

United States

1793

Congress of the United States

United States

1791

Marine Navigation and Safety of Sea Transportation

Adam Weintrit

2009

Third Congress of the United States: At the first session, begun and held at the city of Philadelphia, in the state of Pennsylvania, on Monday, the second of December, one thousand seven hundred and ninety-three

United States

1794

Coast Guard

United States. General Accounting Office

1980

Sailing directions (enroute)

National Geospatial-Intelligence Agency (U.S.)

2002