Léon Lipschutz was a French collector and bibliographer. He authored Une bibliothèque dreyfusienne. Essai de bibliographie thématique et analytique de l’affaire Dreyfus. Mr. Lipschutz spent much of his life in Paris studying and collecting Dreyfusiana and Judaica and donating his acquisitions to various institutions. In his guide he does not merely list the items in the collection but organizes and analyses them, providing cogent information and insight that will be useful to both the lay reader and the expert.