2010. National Geophysical Data Center. This shapefile contains isodynamic lines (lines of equal total intensity of the Earth's magnetic field), derived from the International Geomagnetic... National Atlas of the United States.
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2010. National Geophysical Data Center. This line shapefile shows lines of equal vertical intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference Fie... National Atlas of the United States.
1999. Geological Survey (U.S.). This line shapefile portrays the major roads in the United States, Puerto Rico, and the U.S. Virgin Islands. The file was produced by joining the i... Geological Survey (U.S.).
1924. Harris County (Tex.). Engineering Department. Includes indexes on verso. 42 x 60 Centimeters Scale approximately 1:32,000 City Maps. The Department? (Houston, Tex).
1879. N.D. Thompson Publishing Co. Relief shown by hachures.; Prime meridians: Greenwich and Washington. 62 x 48 centimeters Scale approximately 1:2,000,000 General Map Collection. N.D. Thompson & Co (St. Louis, Mo), 1879.
1844. Emory, William H. (William Hemsley), 1811-1887 and United States. War Dept. Corps of Topographical Engineers. Prime meridians: Greenwich and Washington, DC. "Published by order of the U.S. Senate." Shows northern Mexico, southwestern U.S., and Texas as defi...
1844. Emory, William H. (William Hemsley), 1811-1887 and United States. Army. Corps of Topographical Engineers. Relief shown by hachures. Prime meridians: Greenwich and Washington. Outline color only for Texas. Shows northern Mexico, southwestern U.S., and Te...
1878. Rock, James L. Southern and Western Texas guide for 1878. 1 map : col. ; 67 x 52 cm. Title from top margin. Inset map of Texas map is El Paso area. Map originally published as folded map for: Rock, James L...
1906. Map of El Paso, Texas, showing a circle drawn to indicate a distance of 3 miles from Ciudad Juárez, Mexico, regarding cases arising in El Paso fro... Government Printing Office.
1856. Young, J. H. (James Hamilton). Relief shown by hachures.; Includes the population, etc. of Texas according to the Census of 1850, and information on the Rio Grande, El Llano Esta... Charles Desilver (Philadelphia).