Robert Green Ingersoll, nicknamed "the Great Agnostic", was an American lawyer, writer, and orator during the Golden Age of Free Thought, who campaigned in defense of agnosticism.
The only known image of Ingersoll addressing an audience.
A political cartoon depicting crowds seeking entertainment by flocking to hear Ingersoll advocate for agnosticism in a theater which is open on Sunday, when the American Museum of Natural History is closed so as "Not to Offend Morality".
Eva Ingersoll Brown was an American social worker, activist, and humanist. She was the daughter of lawyer and freethinker Robert G. Ingersoll and activist Eva Parker Ingersoll.
Eva Ingersoll-Brown (third from left) during a women's peace parade in New York City, 29 August 1914