""Freethinkers of the Nineteenth Century"" by Janet E. Courtney is a comprehensive study of the intellectual and cultural movement of freethought during the 19th century. The book explores the lives and ideas of influential freethinkers such as Charles Bradlaugh, Annie Besant, Robert Ingersoll, and Thomas Paine, who challenged traditional religious beliefs and championed rationalism, science, and individual freedom. Through detailed biographical accounts...