The Pennsylvania GenWeb Project is a tremendous resource and great starting place for familiarizing yourself with official online offerings for the Keystone State. It has a map of all 67 PA counties and links to each. You will want to begin your search by exploring the county websites list and finding what each has available.
The Cambria County resource listing is very well done and includes (among other things) a list of county cemeteries and a partial list of records available at the county courthouse.
The largest (and perhaps best known) area cemetery is Grandview Cemetery
(established in 1885, four years prior to the infamous Johnstown Flood).
The site includes internment look up.
Local genealogical and historical societies can be very helpful. They include:
Blair County Genealogical Society Inc.
Cambria County Historical Society
(site includes a listing of all Cambria County municipalities)
Johnstown Area Genealogical and Historical Society
Johnstown Area Heritage Association
Somerset County Historical Center
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