"The Adventures of Tom Sawyer" introduced readers to characters inspired by the childhood of its author Mark Twain. June 9 is the 150th anniversary of the book's publication in 1876. Multiple events are planned in Twain's hometown of Hannibal, Missouri, marking the book’s real-life setting and literary impact. Mark Schneider, development and marketing manager at the Mark Twain Boyhood Home & Museum in Hannibal, talks about the history of Twain’s…