Henri-Jean Martin was a leading authority on the history of the book in Europe, and an expert on the history of writing and printing. He was a leader in efforts to promote libraries in France, and the history of libraries and printing.
Henri Joseph Du Laurens was a French unfrocked Trinitarian friar, satirical poet and novelist, born at Douai, the son of the regimental surgeon Jean Joseph Laurent and his wife Marie Josephe Menon. He was author of such libertine works as Le compère Matthieu, Imirce, ou la fille de la nature and L'Arrétin moderne. He may also have written Candide, Part II. He died at Mariembourg in the French First Republic, now in Belgium.
Henrik Eberle is a German historian. During the first decade of the twenty-first century he came to prominence beyond the confines of the German academic community with compilations, books, articles and interviews concerned with Adolf Hitler. Some of these have been translated into English.