The Pennsylvania Magazine of History and Biography contains not only a wealth of useful articles on colonial Pennsylvania but also primary source material in printed form. The first 75 volumes are indexed ( Philadelphia, 1954). Manuscript collections in Pennsylvania can be traced through Philip M. Hamer, ed., A Guide to Archives and Manuscripts in the United States ( New Haven, 1961). The richest source of documents can be surveyed through the Guide to the Manuscript Collections of the Historical Society of Pennsylvania, 2nd ed. ( Philadelphia, 1949); a brief description here could not do justice to the wealth of materials to be found at 1300 Locust Street in Philadelphia. Primary sources in print are cited under relevant topical headings below.
Norman B. Wilkinson, et al., Bibliography of Pennsylvania History ( Harrisburg, 1957) is a useful compendium of other bibliographical aids as well as of secondary works.
The Journal of George Fox, rev. ed. ( Cambridge, Eng., 1952), which one nineteenth-century historian called "gibberish" and another characterized as "one of the most extraordinary and instructive narratives in the world," should at least be sampled by students of Quakerism. Many other journals followed it. The first attempt at a history was William Penn Brief Account of the Rise and Progress of the People called Quakers, in which their Fundamental Principles, Doctrines, Worship, Ministry, and Discipline are plainly declared ( London, 1694), which depicts the emergence of the Society of Friends as the revival of primitive Christianity. An earlier and more comprehensive examination of Quaker beliefs can be found in Robert Barclay An Apology for the True Christian Divinity: being an Explanation and Vindication of the Principles and Doctrines of the People Called Quakers ( London, 1675) which, though criticized by some of Barclay's contemporaries as being too Calvinistic, has stood as the classic systemization of seventeenthcentury Quakerism.