Early in his journalism career, 1849, he wrote a series of newspaper articles in defense of anarchist philosopher Pierre-Joseph Proudhon and his mutual banking ideas. They were published in collected form in 1896 as "Proudhon and His Bank of the People" by Benjamin Tucker, who did so partly to expose Dana's radical past as Dana had late in life become quite conservative, editorializing against radicals, "reds", and the free silver movement. This book remains in print today through a Charles H. Kerr Company Publishers edition with an introduction by Paul Avrich.