Project Gutenberg has this entire series, though there were variations in the titles from the original print sources. You can find all volumes:

#40858 Vol. 1, published 1845 by W. Collins
#41470 Vol. 2, published 1846 by W. Collins
#41253 Vol. 3, published 1848 by American Tract Society
#40971 Vol. 4, published 1846 by R. Carter
#41484 Vol. 5, published 1862 by W. Collins

Release date is 2012-09-25

Produced by Colin Bell, Delphine Lettau, Julia Neufeld and
the Online Distributed Proofreading Team at
http://www.pgdp.net

"History of the Reformation in the Sixteenth Century, Volume 1" by J.H. Merle D'Aubigné is a historical account written in the mid-19th century. The book investigates the events leading to the Protestant Reformation, focusing on significant figures, including Martin Luther, and the socio-religious climate of the time. It aims to present a comprehensive view of how the Reformation arose as a response to the corruption and excesses of the Catholic Church, ultimately reshaping Christian beliefs and society." "The opening of the work discusses the decline of Christianity and the rise of the papacy, establishing the context of spiritual turmoil in which the Reformation emerged. It outlines how the initial purity of the Christian faith became corrupted over time through increased clerical power and the monetization of salvation, as seen in the problematic practices of indulgences and the elevation of the Church hierarchy. D'Aubigné argues that the Reformation was a response to these perversions, aiming to restore direct access to God for believers, free from the intermediaries that had been established over centuries." (This is an automatically generated summary.)

Original publication data not identified