Though the title of this site does read Southeastern Pennsylvania, there is some content on the site that falls outside of the borders of Pennsylvania, because some of my research has led out of state.
At some point, I may expand this project into a Mid-Atlantic project, but, for now, since the bulk of my research has been in PA, I'll leave it as it is for now.
The best starting place to find info on the site is through the Data Archives section. The sections are based on locality and then broken further into categories. Many types of data also have listings under multiple categories, so you might find find a church listed under both its denomination as well as its location.