1) In "To Kill a Mockingbird" does Mr. Underwood own the Maycomb Tribune? Does he control what goes in the Maycomb Tribune and what doesn't?
2) Is there another newspaper in Maycombe other than the Maycomb Tribune?
Check this site for help with that question.
http://www.sparknotes.com/lit/mocking/
To find the answer to your first question, you can refer to the novel "To Kill a Mockingbird" by Harper Lee. Mr. Underwood is indeed the owner and editor of the Maycomb Tribune. He is responsible for managing the content that gets published in the newspaper. You can verify this information by reading the book or looking for reliable sources that discuss the characters and storyline of "To Kill a Mockingbird."
As for your second question, "To Kill a Mockingbird" does not mention any other newspapers in Maycomb. However, it's important to note that Maycomb is a fictional town, so the absence of another newspaper could be deliberate for the purposes of the story. If you are looking for information beyond the context of the novel, it's best to consult authorized sources or conduct further research on the topic.