J.S. Rowntree: “Friends—Their Faith and Practice.”

T.E. Harvey: “Rise of the Quakers.”

Elizabeth B. Emmott: “Story of Quakerism.”

Rufus M. Jones: “A Dynamic Faith.”
“Social Law in the Spiritual World.”
“Quakerism a Religion of Life.” (Swarthmore Lecture.)

W.C. Braithwaite: “Spiritual Guidance in Quaker Experience.” (Swarthmore Lecture.)
“Beginnings of Quakerism.”

Allen C. Thomas: “History of Friends in America.”