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  1. USGS Historical Topographic Map Explorer

    USGS Historical Topographic Map Explorer. 1. Go to the location you want to explore, then Click on a place to see its historical maps. ... Historical Map Scales.

  2. Old Maps Online

    Welcome to Old Maps Online, the easy-to-use gateway to historical maps in libraries around the world. Find a place Browse the old maps. Share on

  3. TNM Download - The National Map

    Open the product list by clicking "results" next to the product count. Users can display the footprint and thumbnail of one or more products, view metadata, directly download the file or add to a Cart.

  4. Browse the Historic Map Works Collection

    browse historic maps, north america, south america, central america, world, europe, asia, oceania, browse cadastral maps, historic map online, purchase rare map ...

  5. Goiter - Symptoms and causes - Mayo Clinic

    The most common cause of goiters worldwide is a lack of iodine in the diet. In the United States, where the use of iodized salt is common, a goiter is more often due to the over- or underproduction of thyroid hormones or to nodules that develop in the gland itself.

  6. Maps | National Park Service

    National Register of Historic Places Public, non-restricted data depicting National Register spatial data processed by the Cultural Resources GIS facility. Data last updated in April, 2014.

  7. Cleveland Historic Maps -

    −Zoom Out. Cleveland Historic Maps ...

  8. Goitre - Wikipedia

    A goitre, or goiter, is a swelling in the neck resulting from an enlarged thyroid gland. A goitre can be associated with a thyroid that is not functioning properly. Worldwide, over 90% of goitre cases are caused by iodine deficiency. The term is from the Latin gutturia, meaning throat. Most goitres are of a benign nature.

  9. 78-Year-Old Man With Historical Goiter | Journal of the ...

    We report the case of a 78-year-old man with historical goiter. The patient’s medical history included recurrent phlebitis treated with fluindione and untreated hypertension. He had been retired from public service since 2001. He was single, without children, and suffered from severe social isolation.

  10. History of U.S. Iodine Fortification and Supplementation

    Iodine is a micronutrient required for thyroid hormone production. This review highlights the history of the discovery of iodine and its uses, discusses the sources of iodine nutrition, and summarizes the current recommendations for iodine intake with a focus on women of childbearing age. Adequate ...