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  1. Maps - Pennsylvania Historical & Museum Commission

    www.phmc.pa.gov/.../Research-Online/Pages/Maps.aspx

    County Maps and Atlases: General - Covering the late 1850s through the 1870s. Land Office Map Collection - An index of Land Office maps found in Record Group 17, arranged alphabetically by county and then by township. Melish-Whiteside County Maps - Maps, created between 1816 and 1821, of forty-four counties, Record Group 17.

    • at A Glance
    • Historical Trends
    • Seasonality
    • Geography
    • People at Risk
    The number of SFR cases has risen in the last two decades, from 495 cases in 2000, to a peak of 6,248 in 2017. However, cases reported in 2018 were slightly lower.
    Because of the inability to differentiate between spotted fever group Rickettsia species using commonly available serologic tests, it is unclear how many of those cases are RMSF, and how many resul...
    The number of SFR cases reported to CDC per year have generally increased over time with distinct increases since the mid-1990s.
    Notably, while the number of cases and incidence rose, the case fatality rate (i.e., the proportion of SFR patients that died as a result of infection) has declined since the 1940s when tetracyclin...
    The current case fatality rate for SFRs using surveillance data is still roughly 0.5% of cases.
    Although SFR cases can occur during any month of the year, most cases reported illness in May–August.
    This period coincides with the season when adult Dermacentorticks are most active.
    Seasonal trends may vary depending on the area of the country and tick species involved.
    SFR cases have been reported throughout the contiguous United States, although five states (Arkansas, Missouri, North Carolina, Tennessee, and Virginia) account for over 50% of SFR cases.
    In Arizona, RMSF cases have recently been identified in an area where the disease had not been previously seen. From 2003 to 2018, nearly 430 cases were reported with a case-fatality rate of about 5%.
    SFR cases are more frequently reported in men than in women.
    People over the age of 40 years account for the highest number of reported cases, however, children under 10 years old represent the highest number of reported deaths.
    Persons with glucose-6-phosphate dehydrogenase (G6PD) deficiency.
    Surveillance data shows higher risk for hospitalization in people with compromised immune systems (e.g., resulting from cancer treatments, advanced HIV infection, prior organ transplants, or some m...
  2. Discover the past of Virginia through State maps in our online collection of old historical maps that span over 400 years of growth. View Maps of Virginia such as historical county boundaries changes, old vintage maps, as well as road / highway maps for all 95 Counties and 38 Independent cities in Virginia.

  3. Pennsylvania Antique Maps and Historical Atlases - Historic ...

    www.historicmapworks.com/.../State.php?c=US&s=Pennsylvania

    Pennsylvania Historical Maps and Atlases. The state of Pennsylvania collection contains 654 atlases spanning 326 years of growth and development (1681 through 2007).Within the atlases are 24,371 historical maps, illustrations, and histories many of which contain family names ideal for genealogical research.

  4. Historical Topographic Maps - Preserving the Past

    www.usgs.gov/core-science-systems/ngp/topo-maps/...

    Year Published: 2017 Historical Topographic Map Collection bookmark. The U.S. Geological Survey (USGS) National Geospatial Program is scanning published USGS 1:250,000-scale and larger topographic maps printed between 1884, the inception of the topographic mapping program, and 2006.

  5. Discover the past of Pennsylvania through State maps in our online collection of old historical maps that span over 250 years of growth. View Pennsylvania Maps such such as historical county boundaries changes, old vintage maps, as well as road / highway maps for all 67 counties in Pennsylvania.

  6. Historic Virginia County Maps Vintage boundaries

    www.mygenealogyhound.com/maps/Virginia-County-Maps/...

    Historic Virginia County Maps. These vintage Virginia maps are provided to help locate the numerous small settlements within a county and to determine the historic boundaries of a county. These maps also show the location of railroad lines and major waterways which were important routes of travel in early days.

  7. Old maps of Virginia

    www.oldmapsonline.org/en/Virginia

    Map of Virginia, Maryland and Delaware. 1 : 633600 Burr, David H., 1803-1875

    • Significance
    • Geography
    • Usage

    Maps of West Virginia are an invaluable element of genealogy and family history research, particularly if you live faraway from where your ancestor lived. Because West Virginia political borders oftentimes changed, historic maps are essential in assisting you uncover the exact location of your ancestors hometown, exactly what land they owned, just who his or her neighbors were, and a lot more.

    West Virginia borders Kentucky, Maryland, Ohio, Pennsylvania and Virginia. West Virginias 10 largest cities are Charleston, Huntington, Parkersburg, Wheeling, Morgantown, Weirton, Fairmont, Beckley, Clarksburg and Martinsburg.

    To View the Map: Just click the Image to view the map online. In order to make the Image size as small as possible they were save on the lowest resolution.

  8. May 07, 2019 · Rocky Mountain spotted fever (RMSF) is a bacterial disease spread through the bite of an infected tick. Most people who get sick with RMSF will have a fever, headache, and rash. RMSF can be deadly if not treated early with the right antibiotic.