It is prudent to familiarize personally with virtually any repository in Pennsylvania that you simply might travel to by getting in contact with to the archive or library ahead of time.
A good number of, if not all, Pennsylvania repositories contain published resources that introduce its collections together with research policy.
Pennsylvania archives and historical organizations also provide On-line websites which provide comparable content. Many even possess down loadable data for some or parts from the collections.
It is mandated that each county support a historical society. In 1952 an archives was started in Philadelphia, the oldest city archives in the country. John Daly compiled a Descriptive Inventory to its holdings in 1970. The first county archives was established in Chester County in 1982 and is considered the model for the Commonwealth