Within the atlases are 24,371 historical maps, illustrations, and histories many of which contain family names ideal for genealogical research. Others are rare antique maps, part of the collection by an exclusive arrangement with the Osher Map Library. The state of Pennsylvania has 38 of these antiquarian maps dating back as early as 1681.
Other Maps and Map Sites. Collections with Maps at the Library of Congress; Genealogical Map of PA Counties, PDF version (purchase a copy) Genealogical Map of PA Counties, Flash version (animation showing growth over time) Historical Maps of Pennsylvania - A website containing many maps not found at the State Archives.
This Historical Pennsylvania Map Collection are from original copies. Most historical maps of Pennsylvania were published in atlases and spans over 350 years of growth for the state. Some Pennsylvania maps years have cities, railroads, P.O. locations, township outlines, and other features useful to the Pennsylvania researcher.
Rocky Mountain spotted fever (RMSF) has been a nationally notifiable condition since the 1920s. As of January 1, 2010, cases of RMSF are reported under a new category called Spotted Fever Rickettsiosis (SFR). This category captures cases of RMSF, Rickettsia parkeri rickettsiosis, Pacific Coast tick fever, and rickettsialpox.
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Pennsylvania Historical Topographic Maps All maps on this page were published by the U.S. Geological Survey and are in the public domain. The date given for each map is the date of latest survey.
Pennsylvania Historic Sites: See reviews and photos of 10 historic sites in Pennsylvania, United States on Tripadvisor.
In Pennsylvania, all roads lead to history. To help find your path, the Pennsylvania Historical and Museum Commission (PHMC) has blazed several special-interest trails leading to some of Pennsylvania's most historic sites. We invite you to explore one site at a time, travel an entire trail, or create your own road trip to Pennsylvania's past.
Rocky Mountain Spotted Fever Fact Sheet 1. What is Rocky Mountain Spotted fever (RMSF)? - RMSF is a severe disease resulting from infection by Rickettsia rickettsii, a bacterium that is transmitted vertically from the female tick to her offspring. 2. Where does RMSF infection occur in Pennsylvania? - Rocky Mountain
Links to Pennsylvania county maps dating from the 1850s through the 1870s are included below. The maps on this page were specifically chosen because they depict a plethora of surface and subterranean features, such as businesses, churches, mineral deposits, mountains, roads, rivers, and schools.
- Risk Factors
Rocky Mountain spotted fever is a bacterial infection transmitted by a tick. Without prompt treatment, Rocky Mountain spotted fever can cause serious damage to internal organs, such as your kidneys and heart.Although it was first identified in the Rocky Mountains, Rocky Mountain spotted fever is most commonly found in the southeastern part of the United States. It also occurs in parts of Canada, Mexico, Central America and South America.Early signs and symptoms of Rocky Mountain spotted fever...
Although many people become ill within the first week after infection, signs and symptoms may not appear for up to 14 days. Initial signs and symptoms of Rocky Mountain spotted fever often are nonspecific and can mimic those of other illnesses: 1. High fever 2. Chills 3. Severe headache 4. Muscle aches 5. Nausea and vomiting 6. Confusion or other neurological changes
Rocky Mountain spotted fever is caused by infection with the organism Rickettsia rickettsii. Ticks carrying R. rickettsii are the most common source of infection.If an infected tick attaches itself to your skin and feeds on your blood for six to 10 hours, you may pick up the infection. But you may never see the tick on you.Rocky Mountain spotted fever primarily occurs when ticks are most active and during warm weather when people tend to spend more time outdoors. Rocky Mountain spotted fever...
Factors that may increase your risk of contracting Rocky Mountain spotted fever include: 1. Living in an area where the disease is common 2. The time of year — infections are more common in the spring and early summer 3. How much time you spend in grassy or wooded areas 4. Whether you have a dog or spend time with dogsIf an infected tick attaches to your skin, you can contract Rocky Mountain spotted fever when you remove it, as fluid from the tick can enter your body through an opening such a...
Rocky Mountain spotted fever damages the lining of your smallest blood vessels, causing the vessels to leak or form clots. This may cause: 1. Inflammation of the brain (encephalitis). In addition to severe headaches, Rocky Mountain spotted fever can cause inflammation of the brain, which can cause confusion, seizures and delirium. 2. Inflammation of the heart or lungs. Rocky Mountain spotted fever can cause inflammation in areas of the heart and lungs. This can lead to heart failure or lung f...
You can decrease your chances of contracting Rocky Mountain spotted fever by taking some simple precautions: 1. Wear long pants and sleeves. When walking in wooded or grassy areas, wear shoes, long pants tucked into socks and long-sleeved shirts. Try to stick to trails and avoid walking through low bushes and long grass. 2. Use insect repellents. Products containing DEET (Off! Deep Woods, Repel) often repel ticks. Be sure to follow the instructions on the label. Clothing that has permethrin i...