Quaker Spirituality: Selected Writings (1984)
Douglas Steere's Quaker Spirituality: Selected Writings includes selections from George Fox (the Journal and the Epistles), Isaac Penington, John Woolman, Caroline Stephen, Rufus M. Jones, and Thomas R. Kelly. The selections are generally longer than they are in the Quaker Reader, and more focused strictly on religion, though Steere provides some historical background as well.
This book was published by Paulist Press, which focuses on Catholic publishing. This book is part of a series called "The Classics of Western Spirituality", which includes authors from many traditions.