Subject: Geomagnetism / Year: 1890 - Yale University Library GeoBlacklight Search Results

1. Isogonic chart for the epoch 1890 Alaska and adjacent regions / [cartographic material]

1890. 2013-10-17T21:11:27Z. 2021-05-05T21:39:54Z. U.S. Coast and Geodetic Survey, issuing body. U.S. Coast & Geodetic Survey. English. Public. Alaska and Siberia, Eastern (Russia).

2. Isogonic chart of the United States for the epoch 1890 [cartographic material].

1890. 2013-10-17T20:40:12Z. 2018-12-10T20:23:40Z. U.S. Coast and Geodetic Survey, issuing body. U.S. Coast and Geodetic Survey. English. Public. United States.

3. Magnetic meridians of the United States for January 1890 and present annual change of the declination [cartographic material]

1890. 2013-10-17T21:24:14Z. 2018-12-10T20:23:17Z. U.S. Coast and Geodetic Survey, issuing body. U.S. Coast and Geodetic Survey. English. Public. United States.