Penington, I., & Barclay, J. (1828). Letters of Isaac Penington: An eminent minister of the gospel in the Society of Friends, which he joined about the year 1658 (From the 2nd. London ed.). Philadelphia: For sale at Friends' Book-Store.

Penington, Isaac, and John Barclay. Letters of Isaac Penington: An Eminent Minister of the Gospel in the Society of Friends, Which He Joined About the Year 1658. From the 2nd. London ed. Philadelphia: For sale at Friends' Book-Store, 1828.

Penington, Isaac, and John Barclay. Letters of Isaac Penington: An Eminent Minister of the Gospel in the Society of Friends, Which He Joined About the Year 1658. From the 2nd. London ed. Philadelphia: For sale at Friends' Book-Store, 1828.