River Ice in Relation to Navigation, Opening Dates.

1946

U.S. Navy

Ice Chart, Northern Hemisphere, June.

1946

U.S. Navy

Ice Chart, Northern Hemisphere, November.

1946

U.S. Navy

World Mercator's proj.

1811

Darton, William

1:114m

World Physical Features. Ocean Currents. Ethnographic Chart of the World.

1854

Hughes, William

World on Mercator's Projection.

1847

Johnson, D. Griffing

1:15m

Ubersicht der Erde.

1892

Rohrbach, C.

1:100m

Regions Polaires

1931

Vivien St Martin, L.

World on Mercator's Projection.

1875

Asher & Adams

1:65m

Mappe -Monde en deux Hemispheres.

1825

Vivien de St Martin, L.

1:95m