Read some Missouri newspapers published during the Civil War if you have ancestors who were living in that locale at that time. You may not find your ancestor mentioned, but it will help place your family in historical context. If your library does not have the microfilmed newspaper collection you want, you can borrow individual issues in microform through interlibrary loan. Your librarian probably will use the library's computer to locate copies of it for you. For your first adventure in locating old newspapers, ask the reference librarian to show you how to locate historical newspaper collections available on microform.
Family historians spend valuable time trying to learn the address of some place.
For this type of research you need to learn how to use directories. No matter who or what organization you're tracking, directories exist for most categories of people and organizations. From it you will discover there is an International Cemetery Directory which lists geographically more than 8,000 cemeteries and their addresses. Telephone books can sometimes be helpful, and many libraries carry a selection of nationwide telephone books. You may even be able to get this information via their telephone reference service.