1951. Large map of Iowa City
1900. Huebinger Survey and Map Publishing Co.
Search Results
1900. Huebinger Survey and Map Publishing Co.
1953. Lincoln Township
1918. Geo. A. Ogle & Co.
1954. Luxemburg
1892. North West Publishing Co.
1912. Midland Map Company. 1 3/4 in. to the mile Material in the public domain. No restrictions on use. University of Iowa. Libraries. Map Collection. Winterset Madisonian (Firm).
2010. National Geophysical Data Center. This map layer shows isogonic lines (lines of constant declination of the Earth's magnetic field), derived from the International Geomagnetic Refer... National Atlas of the United States.
2010. National Geophysical Data Center. This line shapefile shows lines of equal horizontal intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference F... National Atlas of the United States.
2010. National Geophysical Data Center. This shapefile shows isoclinic lines (lines of constant inclination of the Earth's magnetic field), derived from the International Geomagnetic Refe... National Atlas of the United States.
2010. National Geophysical Data Center. This map layer shows isoporic lines (lines of equal annual change, or secular variation, in the declination of the Earth's magnetic field), derived... National Atlas of the United States.
2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the horizontal component of the total field intensity of the Earth's ... National Atlas of the United States.