Eight-year-old Virginia O’Hanlon wrote a letter to the editor of New York’s Sun, and quick response was printed as an unsigned editorial on Sept. 21, 1897. The work of former Civil War correspondent Francis P. Church has since become history’s most reprinted newspaper editorial, prefaced with this note from the newspaper: We take pleasure in answering at once and thus prominently the communication below, expressing at the same time our great gratification that its faithful author is number...