In The U.S.
In Italy and France
A History Of The Waldensians, from the Virtual Museum of Protestantism.
Out Of Print Books Online
Many books about the Waldensians are out of print, but fortunately, a number are available for free online.
Authentic Details of the Valdenses, in Piedmont and Other Countries, by Charles Holte Bracebridge, from the Harvard College Library Collection.
Historical Studies by Eugene Lawrence, Chapter: The Vaudois (begins on page 198), from Harper’s Monthly Magazine.
History Of The Waldenses by Adam Blair, from the collection of Princeton University.
The History Of The Waldenses by J.A. Wylie, from the Cornell University Library Collection.
Sonnet 18: “On The Late Massacre In Piedmont”, by John Milton, from the John Milton Reading Room, Dartmouth University.
Books In Print
The Waldensian Dissent: Persecution and Survival, c. 1170-c. 1570, by Gabriel Audisio, Cambridge University Press.
The Reformation of the Heretics: The Waldenses of the Alps, 1480-1580, by Euan Cameron, Clarendon Press.
Waldenses: Rejections of Holy Church in Medieval Europe, by Euan Cameron, Wiley-Blackwell.
Out Of Print Books Not Yet Online
You may be able to find these used.
The Waldensian Story: A Study In Faith, Intolerance and Survival, by Prescot Stephens, Book Guild Publishing Ltd.