Analysis of information sources in references of the Wikipedia article "Human, All Too Human" in English language version.
In late April [1878], Schmeitzner issues FN's new book, Menschlisches, Allzumenschliches; Ein Buch für freie Geister. Dem Andenken Voltaires geweiht zur Gedächtnisfeier seines Todestages, den 30. Mai 1778 [Human, All Too Human; a Book for Free Spirits. Dedicated to the memory of Voltaire on the commemoration of the day of his death, 30 May 1778]
In late April [1878], Schmeitzner issues FN's new book, Menschlisches, Allzumenschliches; Ein Buch für freie Geister. Dem Andenken Voltaires geweiht zur Gedächtnisfeier seines Todestages, den 30. Mai 1778 [Human, All Too Human; a Book for Free Spirits. Dedicated to the memory of Voltaire on the commemoration of the day of his death, 30 May 1778]