Marriage License Med. Skilled Nursing Fac. 1st Floor, City-County Bldg. No matter which counties you are researching in Western Pennsylvania, you will want to visit the various libraries in Pittsburgh. These are in the Oakland section of Pittsburgh.
Parking is often difficult to find, but they are easily accessible by bus from downtown Pittsburgh.
Another good resource is the local branch of the Family History Library located in Greentree. Many community or branch libraries and historical societies have collections relating to the area they are located and are a good resource for cemetery records, directories, newspapers, obituaries, marriages and religious or military information. Also check the Historical Society of Western Pennsylvania and the Historic Pittsburgh Project . It is wise to visit a library near your research interests. This will probably be your starting point.